Commit Graph

6830 Commits

Author SHA1 Message Date
Rafał Miłecki
9ea97a7d68 mtd: powernv_flash: set of_node in mtd's dev
This enables some features implemented in mtd subsystem like reading
label and partitioning info from DT.

Reported-by: Timothy Pearson <tpearson@raptorengineering.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-07-18 16:31:24 +02:00
Boris Brezillon
b8f0fadab2 mtd: rawnand: jz4780: Drop the dependency on MACH_JZ4780
This MACH_JZ4780 dependency is taken care of by JZ4780_NEMC, no need
to repeat it here.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:24 +02:00
Boris Brezillon
6968e07e81 mtd: rawnand: jz4740: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having MACH_JZ4740 enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:24 +02:00
Boris Brezillon
e65e3a5070 MIPS: jz4740: Move jz4740_nand.h header to include/linux/platform_data/jz4740
This way we will be able to compile the jz4740_nand driver when
COMPILE_TEST=y.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:23 +02:00
Boris Brezillon
eaea2e7300 mtd: rawnand: txx9ndfmc: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having SOC_TX4938 or SOC_TX4939
enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:23 +02:00
Boris Brezillon
dc2865ac35 MIPS: txx9: Move the ndfc.h header to include/linux/platform_data/txx9
This way we will be able to compile the ndfmc driver when
COMPILE_TEST=y.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:23 +02:00
Boris Brezillon
a6be5051cd mtd: rawnand: fsl_ifc: Allow selection of this driver when COMPILE_TEST=y
It just makes maintainers' life easier by allowing them to compile-test
this driver without having FSL_SOC, ARCH_LAYERSCAPE or SOC_LS1021A
enabled.

We also need to add a dependency on HAS_IOMEM to make sure the
driver compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:22 +02:00
Boris Brezillon
62a316088d mtd: rawnand: fsl_ifc: Add an __iomem specifier on eccstat_regs
The local eccstat_regs variable in fsl_ifc_run_command() is missing an
__iomem specifier, and sparce complains about that.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:22 +02:00
Boris Brezillon
17c09ed706 mtd: rawnand: fsmc: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having PLAT_SPEAR, ARCH_NOMADIK,
ARCH_U8500 or MACH_U300 enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:21 +02:00
Boris Brezillon
f55824c6fa mtd: rawnand: fsmc: Use uintptr_t casts instead of unsigned ones
uintptr_t should be used when casting a pointer to an unsigned int so
that the code compiles without warnings even on 64-bit architectures.

This is needed if we want to allow selection of this driver when
COMPILE_TEST=y.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:20 +02:00
Boris Brezillon
8f3931ed97 mtd: rawnand: fscm: Avoid collision on PC def when compiling for MIPS
We want to allow this driver to be selected when COMPILE_TEST=y, this
means the driver can be compiled for any arch, including MIPS. When
compiling this driver for MIPS, we end up with a collision on the 'PC'
macro definition (also defined in arch/mips/include/asm/ptrace.h).

Prefix the fsmc one with FSMC_ to avoid this problem.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:20 +02:00
Boris Brezillon
e37db6df41 mtd: rawnand: sunxi: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having ARCH_SUNXI enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:20 +02:00
Boris Brezillon
06c8b5dc93 mtd: rawnand: sunxi: Make sure ret is initialized in sunxi_nfc_read_byte()
Fixes the following smatch warning:

drivers/mtd/nand/raw/sunxi_nand.c:551 sunxi_nfc_read_byte() error: uninitialized symbol 'ret'.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:19 +02:00
Boris Brezillon
cf3e3fd2e9 mtd: rawnand: sunxi: Add an U suffix to NFC_PAGE_OP definition
Fixes the "warning: large integer implicitly truncated to unsigned type
[-Woverflow]" warning when compiled for x86.

This is needed in order to allow compiling this driver when
COMPILE_TEST=y.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:19 +02:00
Boris Brezillon
b9221470b0 mtd: rawnand: davinci: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having ARCH_DAVINCI or ARCH_KEYSTONE
enabled.

We also need to add a dependency on HAS_IOMEM to make sure the
driver compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:18 +02:00
Miquel Raynal
d3691813b0 mtd: rawnand: fix indentation in Kconfig
Rules about Kconfig are simple but in the raw NAND directory indentation
is somehow archaic. Fix the indentation in the whole file.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:18 +02:00
Boris Brezillon
cc53d5ca38 mtd: rawnand: davinci: Use uintptr_t casts instead of unsigned ones
uintptr_t should be used when casting a pointer to an unsigned int so
that the code compiles without warnings even on 64-bit architectures.

This is needed if we want to allow selection of this driver when
COMPILE_TEST=y.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:17 +02:00
Boris Brezillon
c5b76d8dd2 mtd: rawnand: davinci: Stop doing iomem pointer <-> u32 conversions
There is no point in doing this sort of conversion since we can
replace |= by += operations which are perfectly valid on pointers.

This is done in preparation of COMPILE_TEST addition to the NAND_DAVINCI
Kconfig entry, since building for x86 generates several warnings because
of inappropriate u32 <-> void * conversions (pointers are 64-bit large
on x86_64).

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:17 +02:00
Boris Brezillon
88a40e7dca mtd: rawnand: atmel: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having ARCH_AT91 enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:16 +02:00
Boris Brezillon
d28395c908 mtd: rawnand: atmel: Add an __iomem cast on gen_pool_dma_alloc() call
gen_pool_dma_alloc() return type is void *, while internally, the
memory region exposed by the sram driver has been mapped with
ioremap().

Add a void * to void __iomem * cast to make sparse happy.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:16 +02:00
Boris Brezillon
e6848511d0 mtd: rawnand: atmel: Use uintptr_t casts instead of unsigned int
When casting a pointer to an unsigned int, uintptr_t should be used to
cope with the pointer size differences between 32-bit and 64-bit
architectures.

This is needed if we want to allow compilation of this driver when
COMPILE_TEST=y.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:15 +02:00
Boris Brezillon
20366e19e2 mtd: rawnand: hynix: Use ->exec_op() in hynix_nand_reg_write_op()
Modern NAND controller drivers implement ->exec_op() instead of
->cmdfunc(), make sure we don't end up with a NULL pointer dereference
when hynix_nand_reg_write_op() is called.

Fixes: 8878b126df ("mtd: nand: add ->exec_op() implementation")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:15 +02:00
Daniel Mack
f9e64d6104 mtd: rawnand: marvell: set reg_clk to NULL if it can't be obtained
Don't keep an error-pointer around in the private struct. If this optional
clock can't be obtained, simply set the pointer to NULL instead so we can
use clk_prepare_enable() on it without further checks,

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:15 +02:00
Daniel Mack
7734a275a7 mtd: rawnand: marvell: remove bogus comment in marvell_nfc_select_chip()
The comment in marvell_nfc_select_chip() about ndtr0 and ndtr1 didn't
reflect what the driver was doing.

The values of NDTR0 and NDTR1 are read from the registers at probe time
and a copy is retained in 'struct marvell_nand_chip'. If keep-config is
set in the DT properties, there are no other writers of these timing
variables so they can safely be used when the chip is selected.

As suggested by Miquel Raynal, simply remove the comment.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:14 +02:00
Daniel Mack
bd9c3f9b3c mtd: rawnand: marvell: add suspend and resume hooks
This patch restores the suspend and resume hooks that the old driver used
to have. Apart from stopping and starting the clocks, the resume callback
also nullifies the selected_chip pointer, so the next command that is issued
will re-select the chip and thereby restore the timing registers.

Factor out some code from marvell_nfc_init() into a new function
marvell_nfc_reset() and also call it at resume time to reset some registers
that don't retain their contents during low-power mode.

Without this patch, a PXA3xx based system would cough up an error similar to
the one below after resume.

[   44.660162] marvell-nfc 43100000.nand-controller: Timeout waiting for  RB signal
[   44.671492] ubi0 error: ubi_io_write: error -110 while writing 2048 bytes to PEB 102:38912, written 0 bytes
[   44.682887] CPU: 0 PID: 1417 Comm: remote-control Not tainted 4.18.0-rc2+ #344
[   44.691197] Hardware name: Marvell PXA3xx (Device Tree Support)
[   44.697111] Backtrace:
[   44.699593] [<c0106458>] (dump_backtrace) from [<c0106718>] (show_stack+0x18/0x1c)
[   44.708931]  r7:00000800 r6:00009800 r5:00000066 r4:c6139000
[   44.715833] [<c0106700>] (show_stack) from [<c0678a60>] (dump_stack+0x20/0x28)
[   44.724206] [<c0678a40>] (dump_stack) from [<c0456cbc>] (ubi_io_write+0x3d4/0x630)
[   44.732925] [<c04568e8>] (ubi_io_write) from [<c0454428>] (ubi_eba_write_leb+0x690/0x6fc)
...

Fixes: 02f26ecf8c ("mtd: nand: add reworked Marvell NAND controller driver")
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:14 +02:00
Fabio Estevam
c786bbcc1a mtd: rawnand: mxc: Switch to SPDX identifier
Adopt the SPDX license identifier headers to ease license compliance
management.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:13 +02:00
Fabio Estevam
b04a3fe314 mtd: rawnand: gpmi: Switch to SPDX identifier
Adopt the SPDX license identifier headers to ease license compliance
management.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:13 +02:00
Boris Brezillon
dc2d8856a7 mtd: rawnand: plat_nand: Kill pdata->ctrl.{hwcontrol, read_byte}()
None of the board files are overloading those hooks, so let's drop them
from struct platform_nand_ctrl.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:12 +02:00
Boris Brezillon
f0f01838f7 mtd: rawnand: orion_nand: Kill orion_nand_data.dev_ready()
None of the boards seem to overload the ->dev_ready() hook, just drop
this field from orion_nand_data.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:12 +02:00
Boris Brezillon
e80eba7581 mtd: rawnand: Kill the chip->scan_bbt() hook
None of the existing drivers are overloading the ->scan_bbt() method,
let's get rid of it and replace calls to ->scan_bbt() by
nand_create_bbt() ones.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 10:10:12 +02:00
Boris Brezillon
44b07b921d mtd: rawnand: Rename nand_default_bbt() into nand_create_bbt()
Rename nand_default_bbt() into nand_create_bbt() and pass it a nand_chip
object to prepare removal of the chip->scan_bbt() hook.

We add a temporary nand_default_bbt() wrapper which will be dropped
after the removal of ->scan_bbt().

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:22 +02:00
Boris Brezillon
5dcddebb1b mtd: rawnand: Kill cafe_nand_bug()
Leaving a function pointer to NULL should be enough to trigger a NULL
pointer exception, and anyway, if we want to BUG() when some missing
hooks are called, this should be done in the core, so let's drop the
cafe_nand_bug() dummy function.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:20 +02:00
Boris Brezillon
d4de09e5bb mtd: rawnand: nuc900: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having ARCH_W90X900 enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:19 +02:00
Boris Brezillon
b2d55fe2ad mtd: rawnand: qcom: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having ARCH_QCOM enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:19 +02:00
Boris Brezillon
434bc2e148 mtd: rawnand: mxc: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having ARCH_MXC enabled.

We also need to add a dependency on HAS_IOMEM to make sure the
driver compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:18 +02:00
Boris Brezillon
c03f3cf37e mtd: rawnand: mxc: Avoid inclusion of asm/mach headers
asm/mach/flash.h does not seem to be needed, drop this #include to make
the code completely machine and arch independent and allow one to
compile it when COMPILE_TEST=y.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:18 +02:00
Boris Brezillon
0beb487241 mtd: rawnand: brcmnand: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having ARM, ARM64 or MIPS enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:17 +02:00
Boris Brezillon
ee70e5e796 mtd: rawnand: lpc32xx: Allow selection of these drivers when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test these drivers without having ARCH_LPC32XX enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:17 +02:00
Boris Brezillon
18331b9810 mtd: rawnand: sharpsl: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having ARCH_PXA enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:17 +02:00
Boris Brezillon
b22a8b075d mtd: rawnand: sharpsl: Remove inclusion of mach and asm headers
We don't need mach/hardware.h and sm/mach-types.h, and asm/io.h can be
replaced by linux/io.h.

Now that we removed those inclusions, we're ready to allow selection of
this driver when COMPILE_TEST=y.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:16 +02:00
Boris Brezillon
31ac1a53eb mtd: rawnand: omap2: Allow selection of this driver when COMPILE_TEST=y
It just makes NAND maintainers' life easier by allowing them to
compile-test this driver without having ARCH_OMAP2PLUS or ARCH_KEYSTONE
enabled.

We also need to add a dependency on HAS_IOMEM to make sure the driver
compiles correctly.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:16 +02:00
Boris Brezillon
45e9f40f46 mtd: rawnand: Add 'depends on HAS_IOMEM' where missing
When COMPILE_TEST is allowed and the platform needs uses the iomem API
we need to add an explicit dependency on HAS_IOMEM to avoid selection
of these drivers when building for an arch that has no iomem support
(this is the case of arch/um).

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:15 +02:00
Boris Brezillon
4d54df4335 mtd: rawnand: gpmi: Remove useless dependency on MTD_NAND
The MTD_NAND_GPMI_NAND entry is already defined in an 'if MTD_NAND'
block, no need to add an extra "depends on MTD_NAND".

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:34:15 +02:00
Abhishek Sahu
9f43deee43 mtd: rawnand: qcom: erased page bitflips detection
NAND parts can have bitflips in an erased page due to the
process technology used. In this case, QCOM NAND controller
is not able to identify that page as an erased page.
Currently the driver calls nand_check_erased_ecc_chunk() for
identifying the erased pages but this won’t work always since the
checking is being with ECC engine returned data. In case of
bitflips, the ECC engine tries to correct the data and then it
generates the uncorrectable error. Now, this data is not equal to
original raw data. For erased CW identification, the raw data
should be read again from NAND device and this
nand_check_erased_ecc_chunk function() should be called for raw
data only.

Now following logic is being added to identify the erased
codeword bitflips.

1. In most of the cases, not all the codewords will have bitflips
   and only single CW will have bitflips. So, there is no need to
   read the complete raw page data. The NAND raw read can be
   scheduled for any CW in page. The NAND controller works on CW
   basis and it will update the status register after each CW read.
   Maintain the bitmask for the CW which generated the uncorrectable
   error.
2. Do raw read for all the CW's which generated the uncorrectable
   error.
3. Both DATA and OOB need to be checked for number of 0. The
   top-level API can be called with only data buf or OOB buf so use
   chip->databuf if data buf is null and chip->oob_poi if
   OOB buf is null for copying the raw bytes temporarily.
4. For each CW, check the number of 0 in cw_data and usable
   oob bytes, The bbm and spare (unused) bytes bit flip won’t
   affect the ECC so don’t check the number of bitflips in this area.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:16 +02:00
Colin Ian King
da8eb7d227 mtd: rawnand: gpmi: remove redundant variable payload_virt
Variable payload_virt is being assigned but is never used hence it is
redundant and can be removed.

Cleans up clang warning:
warning: variable 'payload_virt' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:15 +02:00
Miquel Raynal
8604e6346e mtd: rawnand: docg4: fix the probe function error path
nand_release() should not be called on an MTD device that has not been
registered. While it should work thanks to the checks done in
mtd_device_unregister() it's a bad practice to cleanup/release
something that has not previously been initialized/allocated.

Rework the error path to follow this rule.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:15 +02:00
Masahiro Yamada
1dfac31a5a mtd: rawnand: denali: optimize timing parameters for data interface
This commit improves the ->setup_data_interface() hook.

The denali_setup_data_interface() needs the frequency of clk_x
and the ratio of clk_x / clk.

The latter is currently hardcoded in the driver, like this:

  #define DENALI_CLK_X_MULT       6

The IP datasheet requires that clk_x / clk be 4, 5, or 6.  I just
chose 6 because it is the most defensive value, but it is not optimal.
By getting the clock rate of both "clk" and "clk_x", the driver can
compute the timing values more precisely.

To not break the existing platforms, the fallback value, 50 MHz is
provided.  It is true for all upstreamed platforms.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Tested-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:14 +02:00
Masahiro Yamada
6f1fe97bec mtd: rawnand: denali_dt: add more clocks based on IP datasheet
Currently, denali_dt.c requires a single anonymous clock, but
the Denali User's Guide requires three clocks for this IP:

 - clk: controller core clock

 - clk_x: bus interface clock

 - ecc_clk: clock at which ECC circuitry is run

This commit supports these named clocks to represent the real hardware.

For the backward compatibility, the driver still accepts a single clock
just as before.  The clk_x_rate is taken from the clock driver again if
the named clock "clk_x" is available.  This will happen only for future
DT, hence the existing DT files are not affected.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Tested-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:14 +02:00
Masahiro Yamada
cd1beffa83 mtd: rawnand: denali_dt: use dev as a shorthand of &pdev->dev
The probe function references &pdev->dev many times, and I will add
more soon.  Add 'dev' as a shorthand.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Tested-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:13 +02:00
Martin Kaiser
24f0ae995d mtd: rawnand: mxc: remove __init qualifier from mxcnd_probe_dt
Using the sysfs unbind, bind nodes, mxcnd_probe and mxcnd_probe_dt can
potentially be called at any time. After the __init functions are cleaned,
mxcnd_probe_dt is no longer available. Calling it anyway causes a crash.

mxcnd_probe used to be marked as __init, this was removed years ago.
Remove the __init qualifier from from mxcnd_probe_dt as well.

Fixes: 06f2551069 ("mtd: remove use of __devinit")
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:13 +02:00
Miquel Raynal
3dfa025f89 mtd: spinand: macronix: Add support for MX35LF2GE4AB
MX35LF2GE4AB is almost identical to MX35LF1GE4AB except it has 2 times
more eraseblocks per LUN and exposes 2 planes instead of 1.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-07-18 09:24:12 +02:00
Boris Brezillon
b02308af05 mtd: spinand: Add initial support for the MX35LF1GE4AB chip
Add minimal support for the MX35LF1GE4AB SPI NAND chip.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:12 +02:00
Frieder Schrempf
1075492bb9 mtd: spinand: Add initial support for Winbond W25M02GV
Add support for the W25M02GV chip.

Signed-off-by: Frieder Schrempf <frieder.schrempf@exceet.de>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:11 +02:00
Peter Pan
a508e8875e mtd: spinand: Add initial support for Micron MT29F2G01ABAGD
Add a basic driver for Micron SPI NANDs. Only one device is supported
right now, but the driver will be extended to support more devices
afterwards.

Signed-off-by: Peter Pan <peterpandong@micron.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:11 +02:00
Peter Pan
7529df4652 mtd: nand: Add core infrastructure to support SPI NANDs
Add a SPI NAND framework based on the generic NAND framework and the
spi-mem infrastructure.

In its current state, this framework supports the following features:

- single/dual/quad IO modes
- on-die ECC

Signed-off-by: Peter Pan <peterpandong@micron.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:10 +02:00
Abhishek Sahu
0cf5c7dbaa mtd: rawnand: provide only single helper function for ECC conf
Function nand_ecc_choose_conf() will be help for all the cases, so
other helper functions can be made static.

nand_check_ecc_caps(): Invoke nand_ecc_choose_conf() with
                       both chip->ecc.size and chip->ecc.strength
                       value set.

nand_maximize_ecc(): Invoke nand_ecc_choose_conf() with
                     NAND_ECC_MAXIMIZE flag.

nand_match_ecc_req(): Invoke nand_ecc_choose_conf() with either
                      chip->ecc.size or chip->ecc.strength value
                      set and without NAND_ECC_MAXIMIZE flag.

CC: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:10 +02:00
Abhishek Sahu
85632c1719 mtd: rawnand: qcom: code reorganization for raw read
Make separate function to perform raw read for one codeword and
call this function multiple times for each codeword in case of
raw page read. This separate function will help in subsequent
patches related with erased codeword bitflip detection.

It will decrease throughput for raw page read. Raw page read
is used for debug purpose so it won't affect normal flash
operations.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:09 +02:00
Abhishek Sahu
5bc36b2bf6 mtd: rawnand: qcom: check for operation errors in case of raw read
Currently there is no error checking for raw read. For raw
reads, there won’t be any ECC failure but the operational
failures are possible, so schedule the NAND_FLASH_STATUS read
after each codeword.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:09 +02:00
Abhishek Sahu
783b5bf9bd mtd: rawnand: qcom: fix return value for raw page read
Fix value returned by ->read_page_raw() to be the
actual operation status, instead of always 0.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:09 +02:00
Abhishek Sahu
28eed9f6ca mtd: rawnand: qcom: modify write_oob to remove read codeword part
QCOM NAND controller layout protects available OOB data bytes with
ECC also so when ecc->write_oob() is being called then it
can't update just OOB bytes. Currently, it first reads the last
codeword which includes old OOB bytes. Then it updates the old OOB
bytes with new ones and then again writes the codeword back.
The reading codeword is unnecessary since user is responsible to
have these bytes cleared to 0xFF.

This patch removes the read part and updates the OOB bytes with
data area padded with OxFF.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:08 +02:00
Abhishek Sahu
add0cfa3c3 mtd: rawnand: qcom: parse read errors for read oob also
read_page and read_oob both calls the read_page_ecc function.
The QCOM NAND controller protect the OOB available bytes with
ECC so read errors should be checked for read_oob also.
This patch moves the error checking code inside read_page_ecc
so caller does not have to check explicitly for read errors.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:08 +02:00
Abhishek Sahu
2f61038673 mtd: rawnand: qcom: fix null pointer access for erased page detection
parse_read_errors can be called with only oob_buf in which case
data_buf will be NULL.  If data_buf is NULL, then don’t
treat this page as completely erased in case of ECC uncorrectable
error for RS ECC. For BCH ECC, the controller itself tells
regarding erased page in status register.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:07 +02:00
Abhishek Sahu
8eab721488 mtd: rawnand: qcom: erased page detection for uncorrectable errors only
Following is the flow in the HW if controller tries to read erased
page:

1. First ECC uncorrectable error will be generated from ECC engine
   since ECC engine first calculates the ECC with all 0xff and match
   the calculated ECC with ECC code in OOB (which is again all 0xff).
2. After getting ECC error, erased CW detection logic will be
   applied which is different for BCH and RS ECC
    a. For BCH, HW checks if all the bytes in page are 0xff and then
       it updates the status in separate register
       NAND_ERASED_CW_DETECT_STATUS.
    b. For RS ECC, the HW reports the same error when reading an
       erased CW, but it notifies that it is an erased CW by
       placing special characters at certain offsets in the
       buffer.

So the erased CW detect status should be checked only if ECC engine
generated the uncorrectable error.

Currently for all other operational errors also (like TIMEOUT, MPU
errors, etc.), the erased CW detect logic is being applied so fix this
and return EIO for other operational errors.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:07 +02:00
Abhishek Sahu
6f20070d51 mtd: rawnand: qcom: wait for desc completion in all BAM channels
The BAM has 3 channels - tx, rx and command. command channel
is used for register read/writes, tx channel for data writes
and rx channel for data reads. Currently, the driver assumes the
transfer completion once it gets all the command descriptors
completed. Sometimes, there is race condition between data channel
(tx/rx) and command channel completion. In these cases,
the data present in buffer is not valid during small window
between command descriptor completion and data descriptor
completion.

This patch generates NAND transfer completion when both
(Data and Command) DMA channels have completed all its DMA
descriptors. It assigns completion callback in last
DMA descriptors of that channel and wait for completion.

Fixes: 8d6b6d7e13 ("mtd: nand: qcom: support for command descriptor formation")
Cc: stable@vger.kernel.org
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:07 +02:00
Abhishek Sahu
7ddb937f2c mtd: rawnand: qcom: use the ecc strength from device parameter
Currently the driver uses the ECC strength specified in DT.
The QPIC/EBI2 NAND supports 4 or 8-bit ECC correction. The same
kind of board can have different NAND parts so use the ECC
strength from device parameters if it is not specified in DT.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:06 +02:00
Abhishek Sahu
320bdb5fb9 mtd: rawnand: qcom: remove dt property nand-ecc-step-size
QCOM NAND controller supports only one step size (512) so
nand-ecc-step-size DT property is redundant. This property
can be removed and ecc step size can be assigned with 512 value.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:06 +02:00
Abhishek Sahu
f9801fda96 mtd: rawnand: denali: use helper function for ecc setup
Use the NAND core helper function nand_ecc_choose_conf to tune
the ECC parameters instead of the function locally defined.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:05 +02:00
Abhishek Sahu
181ace9e1b mtd: rawnand: helper function for setting up ECC configuration
commit 2c8f8afa7f ("mtd: nand: add generic helpers to check,
match, maximize ECC settings") provides generic helpers which
drivers can use for setting up ECC parameters.

Since same board can have different ECC strength nand chips so
following is the logic for setting up ECC strength and ECC step
size, which can be used by most of the drivers.

1. If both ECC step size and ECC strength are already set
   (usually by DT) then just check whether this setting
   is supported by NAND controller.
2. If NAND_ECC_MAXIMIZE is set, then select maximum ECC strength
   supported by NAND controller.
3. Otherwise, try to match the ECC step size and ECC strength closest
   to the chip's requirement. If available OOB size can't fit the chip
   requirement then select maximum ECC strength which can be fit with
   available OOB size.

This patch introduces nand_ecc_choose_conf function which calls the
required helper functions for the above logic. The drivers can use
this single function instead of calling the 3 helper functions
individually.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-18 09:24:05 +02:00
Greg Kroah-Hartman
83cf9cd6d5 Merge 4.18-rc5 into char-misc-next
We want the char-misc fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-16 09:04:54 +02:00
Randy Dunlap
ac3167257b headers: separate linux/mod_devicetable.h from linux/platform_device.h
At over 4000 #includes, <linux/platform_device.h> is the 9th most
#included header file in the Linux kernel.  It does not need
<linux/mod_devicetable.h>, so drop that header and explicitly add
<linux/mod_devicetable.h> to source files that need it.

   4146 #include <linux/platform_device.h>

After this patch, there are 225 files that use <linux/mod_devicetable.h>,
for a reduction of around 3900 times that <linux/mod_devicetable.h>
does not have to be read & parsed.

    225 #include <linux/mod_devicetable.h>

This patch was build-tested on 20 different arch-es.

It also makes these drivers SubmitChecklist#1 compliant.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kbuild test robot <lkp@intel.com> # drivers/media/platform/vimc/
Reported-by: kbuild test robot <lkp@intel.com> # drivers/pinctrl/pinctrl-u300.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-07 17:52:26 +02:00
Colin Ian King
fb60e87dc4 mtd: nftl: remove redundant variable nb_erases
Variable nb_erases is being assigned but is never used hence it is
redundant and can be removed.

Cleans up clang warning:
warning: variable 'nb_erases' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-07-07 10:55:05 +02:00
Colin Ian King
0219ef1ce5 mtd: cfi: cmdset_0002: remove redundant variable timeo
Variable is_local is being assigned but is never used hence it is
redundant and can be removed.

Cleans up clang warning:
warning: variable 'timeo' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-07-07 10:53:51 +02:00
Geert Uytterhoeven
4836024616 mtd: Use kasprintf() instead of fixed buffer formatting
Using "%4.4X" in the calculation of the buffer size is misleading, as
the format string literal has no relation to the actual size needed.
Hence this is fragile w.r.t. future modification.

As this is not a hot path, fix this by replacing the formatting in a
fixed buffer by kasprintf().

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-07-07 10:53:45 +02:00
Rafał Miłecki
98534a58c8 mtd: parsers: trx: add of_match_table with the new DT binding
This allows using TRX parser to find TRX partitions on flash device
described in DT using a proper binding. It's useful for devices storing
firmware on a separated flash and having rootfs partition in it.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-07-07 10:51:00 +02:00
Zhouyang Jia
c31106b7af mtd: maps: gpio-addr-flash: add error handling for ioremap_nocache
When ioremap_nocache fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling ioremap_nocache.

Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-07-07 10:48:36 +02:00
Vignesh R
aa7eee8a14 mtd: spi-nor: cadence-quadspi: Fix direct mode write timeouts
Sometimes when writing large size files to flash in direct/memory mapped
mode, it is seen that flash write enable command times out with error:
[  503.146293] cadence-qspi 47040000.ospi: Flash command execution timed out.

This is because, we need to make sure previous direct write operation
is complete by polling for IDLE bit in CONFIG_REG before starting the
next operation.

Fix this by polling for IDLE bit after memory mapped write.

Fixes: a27f2eaf2b ("mtd: spi-nor: cadence-quadspi: Add support for direct access mode")
Cc: stable@vger.kernel.org
Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-07-03 10:01:44 +02:00
Chris Packham
243f37cb1f mtd: rawnand: micron: add fixup for ONFI revision
Some Micron NAND chips (MT29F1G08ABAFAWP-ITE:F) report 00 00 for the
revision number field of the ONFI parameter page. Rather than rejecting
these outright assume ONFI version 1.0 if the revision number is 00 00.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-02 09:02:28 +02:00
Chris Packham
872b71ff08 mtd: rawnand: add defines for ONFI version bits
Add defines for the ONFI version bits and use them in
nand_flash_detect_onfi().

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-02 09:02:22 +02:00
Chris Packham
00ce4e039a mtd: rawnand: add manufacturer fixup for ONFI parameter page
This is called after the ONFI parameter page checksum is verified
and allows us to override the contents of the parameter page.

Suggested-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-02 09:02:16 +02:00
Chris Packham
ed6d0285f8 mtd: rawnand: marvell: Handle on-die ECC
>From the controllers point of view this is the same as no or
software only ECC.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-02 09:02:12 +02:00
Stefan Agner
d7d9f8ec77 mtd: rawnand: add NVIDIA Tegra NAND Flash controller driver
Add support for the NAND flash controller found on NVIDIA
Tegra 2 SoCs. This implementation does not make use of the
command queue feature. Regular operations using ->exec_op()
use PIO mode for data transfers. Raw, ECC and OOB read/writes
make use of the DMA mode for data transfer.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-02 09:02:06 +02:00
Stefan Agner
f922bd798b mtd: rawnand: add an option to specify NAND chip as a boot device
Allow to define a NAND chip as a boot device. This can be helpful
for the selection of the ECC algorithm and strength in case the boot
ROM supports only a subset of controller provided options.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-02 09:01:52 +02:00
Stefan Agner
f308d7353d mtd: rawnand: add Reed-Solomon error correction algorithm
Add Reed-Solomon (RS) to the enumeration of ECC algorithms.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-02 09:01:41 +02:00
Martin Blumenstingl
16c4fba03a mtd: rawnand: hynix: fix decoding the OOB size on H27UCG8T2BTR
The datasheet of the H27UCG8T2BTR states that this chip has a page size
of "16,384 + 1,280(Spare) bytes". The description of the "4th Byte of
Device Identifier Description" indicates that bits 6, 3 and 2 are
encoding the "Redundant Area Size / 8KB", where 640 bytes is a value of
0x6 (110 in binary notation).

hynix_nand_extract_oobsize decodes an OOB size of 640 bytes for this
chip. Kernel boot log extract before this patch:
nand: Could not find valid ONFI parameter page; aborting
nand: device found, Manufacturer ID: 0xad, Chip ID: 0xde
nand: Hynix NAND 8GiB 3,3V 8-bit
nand: 8192 MiB, MLC, erase size: 4096 KiB, page size: 16384,
      OOB size: 640

However, based on the description in the datasheet we need to multiply
the OOB size with 2, because it's "640 spare bytes per 8192 bytes page
size" and this NAND chip has a page size of 16384 (= 2 * 8192). After
this patch the kernel boot log reports:
nand: Could not find valid ONFI parameter page; aborting
nand: device found, Manufacturer ID: 0xad, Chip ID: 0xde
nand: Hynix NAND 8GiB 3,3V 8-bit
nand: 8192 MiB, MLC, erase size: 4096 KiB, page size: 16384,
      OOB size: 1280

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-02 09:01:38 +02:00
Boris Brezillon
ac8cf0b9e7 mtd: rawnand: micron: Update ecc_stats.corrected
Even if we can't update ecc_stats.corrected with an accurate value we
should at least increase the number of bitflips so that MTD users can
know that there was some bitflips.

Just add chip->ecc.strength to mtd->ecc_stats.corrected which should
account for the worst case situation.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-02 09:01:34 +02:00
Peter Rosin
efc6362c6f mtd: rawnand: atmel: add module param to avoid using dma
On a sama5d31 with a Full-HD dual LVDS panel (132MHz pixel clock) NAND
flash accesses have a tendency to cause display disturbances. Add a
module param to disable DMA from the NAND controller, since that fixes
the display problem for me.

Signed-off-by: Peter Rosin <peda@axentia.se>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-07-02 09:01:29 +02:00
Masahiro Yamada
7a1f1b594a mtd: replace VMLINUX_SYMBOL_STR() with string literal
With the special case handling for Blackfin and Metag was removed by
commit 94e58e0ac3 ("export.h: remove code for prefixing symbols with
underscore"), VMLINUX_SYMBOL_STR() can be replaced with string literal.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-24 22:13:34 +02:00
Masahiro Yamada
3f6e698604 mtd: rawnand: denali_dt: set clk_x_rate to 200 MHz unconditionally
Since commit 1bb8866677 ("mtd: nand: denali: handle timing parameters
by setup_data_interface()"), denali_dt.c gets the clock rate from the
clock driver.  The driver expects the frequency of the bus interface
clock, whereas the clock driver of SOCFPGA provides the core clock.
Thus, the setup_data_interface() hook calculates timing parameters
based on a wrong frequency.

To make it work without relying on the clock driver, hard-code the clock
frequency, 200MHz.  This is fine for existing DT of UniPhier, and also
fixes the issue of SOCFPGA because both platforms use 200 MHz for the
bus interface clock.

Fixes: 1bb8866677 ("mtd: nand: denali: handle timing parameters by setup_data_interface()")
Cc: linux-stable <stable@vger.kernel.org> #4.14+
Reported-by: Philipp Rosenberger <p.rosenberger@linutronix.de>
Suggested-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-22 18:47:56 +02:00
Geert Uytterhoeven
cbdceb9b3e mtd: dataflash: Use ULL suffix for 64-bit constants
With gcc 4.1.2 when compiling for 32-bit:

    drivers/mtd/devices/mtd_dataflash.c:736: warning: integer constant is too large for ‘long’ type
    drivers/mtd/devices/mtd_dataflash.c:737: warning: integer constant is too large for ‘long’ type

Add the missing "ULL" suffixes to fix this.

Fixes: 67e4145ebf ("mtd: dataflash: Add flash_info for AT45DB641E")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-22 10:32:28 +02:00
Joakim Tjernlund
f1ce87f608 mtd: cfi_cmdset_0002: Avoid walking all chips when unlocking.
cfi_ppb_unlock() walks all flash chips when unlocking sectors,
avoid walking chips unaffected by the unlock operation.

Fixes: 1648eaaa15 ("mtd: cfi_cmdset_0002: Support Persistent Protection Bits (PPB) locking")
Cc: stable@vger.kernel.org
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-22 10:29:16 +02:00
Joakim Tjernlund
0cd8116f17 mtd: cfi_cmdset_0002: Fix unlocking requests crossing a chip boudary
The "sector is in requested range" test used to determine whether
sectors should be re-locked or not is done on a variable that is reset
everytime we cross a chip boundary, which can lead to some blocks being
re-locked while the caller expect them to be unlocked.
Fix the check to make sure this cannot happen.

Fixes: 1648eaaa15 ("mtd: cfi_cmdset_0002: Support Persistent Protection Bits (PPB) locking")
Cc: stable@vger.kernel.org
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-22 00:55:16 +02:00
Joakim Tjernlund
5fdfc3dbad mtd: cfi_cmdset_0002: fix SEGV unlocking multiple chips
cfi_ppb_unlock() tries to relock all sectors that were locked before
unlocking the whole chip.
This locking used the chip start address + the FULL offset from the
first flash chip, thereby forming an illegal address. Fix that by using
the chip offset(adr).

Fixes: 1648eaaa15 ("mtd: cfi_cmdset_0002: Support Persistent Protection Bits (PPB) locking")
Cc: stable@vger.kernel.org
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-22 00:35:31 +02:00
Joakim Tjernlund
f93aa8c4de mtd: cfi_cmdset_0002: Use right chip in do_ppb_xxlock()
do_ppb_xxlock() fails to add chip->start when querying for lock status
(and chip_ready test), which caused false status reports.
Fix that by adding adr += chip->start and adjust call sites
accordingly.

Fixes: 1648eaaa15 ("mtd: cfi_cmdset_0002: Support Persistent Protection Bits (PPB) locking")
Cc: stable@vger.kernel.org
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-22 00:35:11 +02:00
Mason Yang
fe3dd97dd6 mtd: rawnand: All AC chips have a broken GET_FEATURES(TIMINGS).
Make sure we flag all broken chips as not supporting this feature.
Also move this logic to a new function to keep things readable.

Fixes: 34c5c01e0c ("mtd: rawnand: macronix: nack the support of changing timings for one chip")
Cc: <stable@vger.kernel.org>
Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-06-22 00:31:22 +02:00
Alexey Khoroshilov
38ebbe2b72 mtd: spi-nor: nxp-spifi: release flash_np in nxp_spifi_probe()
nxp_spifi_probe() increments refcnt of SPI flash device node by
of_get_next_available_child() and leaves it undecremented on both
successful and error paths.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-22 00:26:06 +02:00
Abhishek Sahu
e9893e6fa9 mtd: rawnand: fix return value check for bad block status
Positive return value from read_oob() is making false BAD
blocks. For some of the NAND controllers, OOB bytes will be
protected with ECC and read_oob() will return number of bitflips.
If there is any bitflip in ECC protected OOB bytes for BAD block
status page, then that block is getting treated as BAD.

Fixes: c120e75e0e ("mtd: nand: use read_oob() instead of cmdfunc() for bad block check")
Cc: <stable@vger.kernel.org>
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-22 00:15:45 +02:00
Martin Kaiser
3f77f244d8 mtd: rawnand: mxc: set spare area size register explicitly
The v21 version of the NAND flash controller contains a Spare Area Size
Register (SPAS) at offset 0x10. Its setting defaults to the maximum
spare area size of 218 bytes. The size that is set in this register is
used by the controller when it calculates the ECC bytes internally in
hardware.

Usually, this register is updated from settings in the IIM fuses when
the system is booting from NAND flash. For other boot media, however,
the SPAS register remains at the default setting, which may not work for
the particular flash chip on the board. The same goes for flash chips
whose configuration cannot be set in the IIM fuses (e.g. chips with 2k
sector size and 128 bytes spare area size can't be configured in the IIM
fuses on imx25 systems).

Set the SPAS register explicitly during the preset operation. Derive the
register value from mtd->oobsize that was detected during probe by
decoding the flash chip's ID bytes.

While at it, rename the define for the spare area register's offset to
NFC_V21_RSLTSPARE_AREA. The register at offset 0x10 on v1 controllers is
different from the register on v21 controllers.

Fixes: d484018 ("mtd: mxc_nand: set NFC registers after reset")
Cc: stable@vger.kernel.org
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-19 13:17:59 +02:00
Chris Packham
12baf77211 mtd: rawnand: micron: add ONFI_FEATURE_ON_DIE_ECC to supported features
Add ONFI_FEATURE_ON_DIE_ECC to the set/get features list for Micron
NAND flash.

Fixes: 789157e41a ("mtd: rawnand: allow vendors to declare (un)supported features")
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-06-19 11:12:30 +02:00
Robert Jarzmik
ac75a50b6d mtd: rawnand: marvell: remove the dmaengine compat need
As the pxa architecture switched towards the dmaengine slave map, the
old compatibility mechanism to acquire the dma requestor line number and
priority are not needed anymore.

This patch simplifies the dma resource acquisition, using the more
generic function dma_request_slave_channel().

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-06-18 21:30:17 +02:00
Boris Brezillon
9882b5375d mtd: m25p80: Use SPI_MEM_OP_NO_DUMMY instead of SPI_MEM_OP_DUMMY(0, x)
SPI_MEM_OP_DUMMY(0, x) means there's 0 dummy bytes to send, which is
similar to SPI_MEM_OP_NO_DUMMY except it's less clear. Use
SPI_MEM_OP_NO_DUMMY instead of SPI_MEM_OP_DUMMY(0, x) in
m25p80_write().
Also stop updating op.dummy.buswidth since this value is only
meaningful if you have dummy bytes.

Reported-by: Cyrille Pitchen <cyrille.pitchen@microchip.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
2018-06-18 11:45:57 +02:00
Boris Brezillon
00a5762b45 mtd: m25p80: Remove unneeded m25p->command field
The ->command field is no longer used, remove it.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
2018-06-18 11:45:55 +02:00
Linus Torvalds
b08fc5277a - Error path bug fix for overflow tests (Dan)
- Additional struct_size() conversions (Matthew, Kees)
 - Explicitly reported overflow fixes (Silvio, Kees)
 - Add missing kvcalloc() function (Kees)
 - Treewide conversions of allocators to use either 2-factor argument
   variant when available, or array_size() and array3_size() as needed (Kees)
 -----BEGIN PGP SIGNATURE-----
 Comment: Kees Cook <kees@outflux.net>
 
 iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAlsgVtMWHGtlZXNjb29r
 QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJhsJEACLYe2EbwLFJz7emOT1KUGK5R1b
 oVxJog0893WyMqgk9XBlA2lvTBRBYzR3tzsadfYo87L3VOBzazUv0YZaweJb65sF
 bAvxW3nY06brhKKwTRed1PrMa1iG9R63WISnNAuZAq7+79mN6YgW4G6YSAEF9lW7
 oPJoPw93YxcI8JcG+dA8BC9w7pJFKooZH4gvLUSUNl5XKr8Ru5YnWcV8F+8M4vZI
 EJtXFmdlmxAledUPxTSCIojO8m/tNOjYTreBJt9K1DXKY6UcgAdhk75TRLEsp38P
 fPvMigYQpBDnYz2pi9ourTgvZLkffK1OBZ46PPt8BgUZVf70D6CBg10vK47KO6N2
 zreloxkMTrz5XohyjfNjYFRkyyuwV2sSVrRJqF4dpyJ4NJQRjvyywxIP4Myifwlb
 ONipCM1EjvQjaEUbdcqKgvlooMdhcyxfshqJWjHzXB6BL22uPzq5jHXXugz8/ol8
 tOSM2FuJ2sBLQso+szhisxtMd11PihzIZK9BfxEG3du+/hlI+2XgN7hnmlXuA2k3
 BUW6BSDhab41HNd6pp50bDJnL0uKPWyFC6hqSNZw+GOIb46jfFcQqnCB3VZGCwj3
 LH53Be1XlUrttc/NrtkvVhm4bdxtfsp4F7nsPFNDuHvYNkalAVoC3An0BzOibtkh
 AtfvEeaPHaOyD8/h2Q==
 =zUUp
 -----END PGP SIGNATURE-----

Merge tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull more overflow updates from Kees Cook:
 "The rest of the overflow changes for v4.18-rc1.

  This includes the explicit overflow fixes from Silvio, further
  struct_size() conversions from Matthew, and a bug fix from Dan.

  But the bulk of it is the treewide conversions to use either the
  2-factor argument allocators (e.g. kmalloc(a * b, ...) into
  kmalloc_array(a, b, ...) or the array_size() macros (e.g. vmalloc(a *
  b) into vmalloc(array_size(a, b)).

  Coccinelle was fighting me on several fronts, so I've done a bunch of
  manual whitespace updates in the patches as well.

  Summary:

   - Error path bug fix for overflow tests (Dan)

   - Additional struct_size() conversions (Matthew, Kees)

   - Explicitly reported overflow fixes (Silvio, Kees)

   - Add missing kvcalloc() function (Kees)

   - Treewide conversions of allocators to use either 2-factor argument
     variant when available, or array_size() and array3_size() as needed
     (Kees)"

* tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits)
  treewide: Use array_size in f2fs_kvzalloc()
  treewide: Use array_size() in f2fs_kzalloc()
  treewide: Use array_size() in f2fs_kmalloc()
  treewide: Use array_size() in sock_kmalloc()
  treewide: Use array_size() in kvzalloc_node()
  treewide: Use array_size() in vzalloc_node()
  treewide: Use array_size() in vzalloc()
  treewide: Use array_size() in vmalloc()
  treewide: devm_kzalloc() -> devm_kcalloc()
  treewide: devm_kmalloc() -> devm_kmalloc_array()
  treewide: kvzalloc() -> kvcalloc()
  treewide: kvmalloc() -> kvmalloc_array()
  treewide: kzalloc_node() -> kcalloc_node()
  treewide: kzalloc() -> kcalloc()
  treewide: kmalloc() -> kmalloc_array()
  mm: Introduce kvcalloc()
  video: uvesafb: Fix integer overflow in allocation
  UBIFS: Fix potential integer overflow in allocation
  leds: Use struct_size() in allocation
  Convert intel uncore to struct_size
  ...
2018-06-12 18:28:00 -07:00
Kees Cook
fad953ce0b treewide: Use array_size() in vzalloc()
The vzalloc() function has no 2-factor argument form, so multiplication
factors need to be wrapped in array_size(). This patch replaces cases of:

        vzalloc(a * b)

with:
        vzalloc(array_size(a, b))

as well as handling cases of:

        vzalloc(a * b * c)

with:

        vzalloc(array3_size(a, b, c))

This does, however, attempt to ignore constant size factors like:

        vzalloc(4 * 1024)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  vzalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  vzalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  vzalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  vzalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
  vzalloc(
-	sizeof(TYPE) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT_ID
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT_ID
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

  vzalloc(
-	SIZE * COUNT
+	array_size(COUNT, SIZE)
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  vzalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vzalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  vzalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vzalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vzalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  vzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  vzalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vzalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  vzalloc(C1 * C2 * C3, ...)
|
  vzalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants.
@@
expression E1, E2;
constant C1, C2;
@@

(
  vzalloc(C1 * C2, ...)
|
  vzalloc(
-	E1 * E2
+	array_size(E1, E2)
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00
Kees Cook
42bc47b353 treewide: Use array_size() in vmalloc()
The vmalloc() function has no 2-factor argument form, so multiplication
factors need to be wrapped in array_size(). This patch replaces cases of:

        vmalloc(a * b)

with:
        vmalloc(array_size(a, b))

as well as handling cases of:

        vmalloc(a * b * c)

with:

        vmalloc(array3_size(a, b, c))

This does, however, attempt to ignore constant size factors like:

        vmalloc(4 * 1024)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  vmalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  vmalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  vmalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  vmalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
  vmalloc(
-	sizeof(TYPE) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT_ID
+	array_size(COUNT_ID, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT_ID)
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT_ID
+	array_size(COUNT_ID, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT_CONST)
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT_CONST
+	array_size(COUNT_CONST, sizeof(THING))
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

  vmalloc(
-	SIZE * COUNT
+	array_size(COUNT, SIZE)
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  vmalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  vmalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  vmalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  vmalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vmalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  vmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  vmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  vmalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  vmalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  vmalloc(C1 * C2 * C3, ...)
|
  vmalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants.
@@
expression E1, E2;
constant C1, C2;
@@

(
  vmalloc(C1 * C2, ...)
|
  vmalloc(
-	E1 * E2
+	array_size(E1, E2)
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00
Kees Cook
a86854d0c5 treewide: devm_kzalloc() -> devm_kcalloc()
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:

        devm_kzalloc(handle, a * b, gfp)

with:
        devm_kcalloc(handle, a * b, gfp)

as well as handling cases of:

        devm_kzalloc(handle, a * b * c, gfp)

with:

        devm_kzalloc(handle, array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        devm_kcalloc(handle, array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        devm_kzalloc(handle, 4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@

(
  devm_kzalloc(HANDLE,
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  devm_kzalloc(HANDLE,
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@

- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@

(
  devm_kzalloc(HANDLE,
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
  devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
  devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
  devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	(E1) * E2
+	E1, E2
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00
Kees Cook
6396bb2215 treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:

        kzalloc(a * b, gfp)

with:
        kcalloc(a * b, gfp)

as well as handling cases of:

        kzalloc(a * b * c, gfp)

with:

        kzalloc(array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        kzalloc_array(array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        kzalloc(4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  kzalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  kzalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  kzalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kzalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

- kzalloc
+ kcalloc
  (
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  kzalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kzalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  kzalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kzalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  kzalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kzalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kzalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  kzalloc(sizeof(THING) * C2, ...)
|
  kzalloc(sizeof(TYPE) * C2, ...)
|
  kzalloc(C1 * C2 * C3, ...)
|
  kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- kzalloc
+ kcalloc
  (
-	(E1) * E2
+	E1, E2
  , ...)
|
- kzalloc
+ kcalloc
  (
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- kzalloc
+ kcalloc
  (
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00
Kees Cook
6da2ec5605 treewide: kmalloc() -> kmalloc_array()
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This
patch replaces cases of:

        kmalloc(a * b, gfp)

with:
        kmalloc_array(a * b, gfp)

as well as handling cases of:

        kmalloc(a * b * c, gfp)

with:

        kmalloc(array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        kmalloc_array(array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        kmalloc(4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

The tools/ directory was manually excluded, since it has its own
implementation of kmalloc().

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@

(
  kmalloc(
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  kmalloc(
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  kmalloc(
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  kmalloc(
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@

- kmalloc
+ kmalloc_array
  (
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  kmalloc(
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  kmalloc(
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  kmalloc(
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  kmalloc(
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  kmalloc(
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  kmalloc(
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@

(
  kmalloc(
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  kmalloc(
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  kmalloc(C1 * C2 * C3, ...)
|
  kmalloc(
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  kmalloc(
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  kmalloc(sizeof(THING) * C2, ...)
|
  kmalloc(sizeof(TYPE) * C2, ...)
|
  kmalloc(C1 * C2 * C3, ...)
|
  kmalloc(C1 * C2, ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	(E1) * E2
+	E1, E2
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- kmalloc
+ kmalloc_array
  (
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00
Linus Torvalds
7c00e8ae04 ARM: SoC platform updates
Here are the main updates for SoC support (besides DT additions) for ARM
 32- and 64-bit platforms. The branch also contains defconfig updates to
 turn on drivers and options as needed on the various platforms.
 
 The largest parts of the delta are from cleanups moving platform data
 and board file setup of TI platforms to ti-sysc bus drivers. There are
 also some sweeping changes of eeprom and nand setup on Davinci, i.MX
 and other platforms.
 
 Samsung is removing support for Exynos5440, which was an oddball SoC
 that hasn't been seen much use in designs.
 
 Renesas is adding support for new SoCs (R-Car E3, RZ/G1C and RZ/N1D).
 
 Linus Walleij is also removing support for ux500 (Sony Ericsson)
 U8540/9540 SoCs that never made it to significant mass production and
 products.
 -----BEGIN PGP SIGNATURE-----
 
 iQJDBAABCAAtFiEElf+HevZ4QCAJmMQ+jBrnPN6EHHcFAlsfCGIPHG9sb2ZAbGl4
 b20ubmV0AAoJEIwa5zzehBx3Ks8P/3j87Za+6OTCzo+lW2byUy1CI4muGwxNSIxX
 65A1Wt2qvRDxjCX4MI5Cx8P1YdYJv+5ZF2p4vdlgQXoz3/XDbG+lxJ+/lyWl/+MK
 9kGsQWwEVicbGkaJCYR4ZKvfAwZ9jf7+cndY0Vgii44xQLsQZHEIfIO+mdlK43GZ
 xqaSckLQQzsDqjMUIckiyVy97RsDk1eLK+H2I+l7qs9v0z5UnhoD2CTxX5LzT8eH
 NlFmfUPN7Znshmt0aMznZyBRr2oM5Dsg49SfG0WhbOzyiZjSpw8MQ0N+RzyROhhB
 h5PjyuZN9fx2dO8Jjkqt3B8KmGFNDarGOmrasIJeCJDFRa9NStqFn0y4qJXS2wU7
 4La3GoBYRV8x0gq339pQ+70qKuD06e62GL7kV656yi+93CitWxy6IjrIACjSX6zH
 PD1hQpewfXAcHAHdBqNevRcz/sjG+36GJSCgI4umSP48NMlCuZafFAT4U/PVlt4E
 6VRQDeoi5ZFYIuPL1+bZvHax4fFxJGnaf02uQ/OPYP1o48AueSSvdo6bUPFbhwOD
 u0/uo3r+HxtQsw9I3tP3kj3/775BJclkO6zbG/dGZ8obuzuDwhuFtr3rzCrP/IzN
 n3rcBuFNZE6SQeKU+Tvmnh8ZLhJc5L8EYvqmihZj+BSfprBc8POFR2la4MRnHSn+
 tPEC/n9E
 =S5wc
 -----END PGP SIGNATURE-----

Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform updates from Olof Johansson:
 "Here are the main updates for SoC support (besides DT additions) for
  ARM 32- and 64-bit platforms. The branch also contains defconfig
  updates to turn on drivers and options as needed on the various
  platforms.

  The largest parts of the delta are from cleanups moving platform data
  and board file setup of TI platforms to ti-sysc bus drivers. There are
  also some sweeping changes of eeprom and nand setup on Davinci, i.MX
  and other platforms.

  Samsung is removing support for Exynos5440, which was an oddball SoC
  that hasn't been seen much use in designs.

  Renesas is adding support for new SoCs (R-Car E3, RZ/G1C and RZ/N1D).

  Linus Walleij is also removing support for ux500 (Sony Ericsson)
  U8540/9540 SoCs that never made it to significant mass production and
  products"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (133 commits)
  MAINTAINERS: add NXP linux team maillist as i.MX reviewer
  ARM: stm32: Don't select DMA unconditionally on STM32MP157C
  arm64: defconfig: Enable PCIe on msm8996 and db820c
  ARM: pxa3xx: enable external wakeup pins
  ARM: pxa: stargate2: use device properties for at24 eeprom
  arm64: defconfig: Enable HISILICON_LPC
  arm64: defconfig: enable drivers for Poplar support
  arm64: defconfig: Enable UFS on msm8996
  ARM: berlin: switch to SPDX license identifier
  arm: berlin: remove non-necessary flush_cache_all()
  ARM: berlin: extend BG2CD Kconfig entry
  OMAP: CLK: CLKSRC: Add suspend resume hooks
  ARM: AM43XX: Add functions to save/restore am43xx control registers
  ASoC: ams_delta: use GPIO lookup table
  ARM: OMAP1: ams-delta: add GPIO lookup tables
  bus: ti-sysc: Fix optional clocks array access
  ARM: OMAP2+: Make sure LOGICRETSTATE bits are not cleared
  ARM: OMAP2+: prm44xx: Inroduce cpu_pm notifiers for context save/restore
  ARM: OMAP2+: prm44xx: Introduce context save/restore for am43 PRCM IO
  ARM: OMAP2+: powerdomain: Introduce cpu_pm notifiers for context save/restore
  ...
2018-06-11 17:49:09 -07:00
Linus Torvalds
ab0b2e5932 This pull request contains updates for both UBI and UBIFS:
- The UBI on-disk format header file is now dual licensed
 - New way to detect Fastmap problems during runtime
 - Bugfix for Fastmap
 - Minor updates for UBIFS (spelling, comments, vm_fault_t, ...)
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAlsdi6AWHHJpY2hhcmRA
 c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wVimEADam9dNKs7hVAlSR5G8fgoFMiPI
 PgP/cQ719PAYh8Zub0w8fIIvtSCaVZmPX/K40w4KAgP/jdQ/v4QD3ZYdHO3vn3/M
 6WI/cEB/Cn5lJp78tt14cGlqG3+xnlwyc9EEeiMCPDWmoSf66J7fwuL3xRq4dDet
 CBISYrF8ZMe6BJohT9kAYeqYoYLzALUmZoOx1DGhX7b2SEaLphCyW0A0rkxoHbYG
 sxAfUiR4/bdaFfqLAmEMgoovIHGYmOdnMJ3Hk+uUVrPEfBzxDQuGfpevDJ1u99hS
 D4qdvY3+VAcTpTK0XJUBgPaVpkYYMS5nfHtpObbyOT/kBmgCloCAmtvVcznxUwJ7
 R+8UBZH/SrxUw+R9JCP1hFgb/PlEAE0+Vsc2jgvqWOQ8xnOqojG5FdqAueGanX+l
 /on2/HNoZp5C8x15+cB9SiQwfdoZrH7vr9uzi1lqaWSV+ZMDpvG/QFMX1QX1gLl9
 TFeQJBojE41y+hjTnnUQZdy1oPaisffU44ymKlf1FR2SdzW6d7wIRBd0jnB+7Pjz
 KocSAA2kqDUcCjUtLFSSVfE7kUL9wwJQUfUxeQFViTGDvAnLcmy1a6mqQ1K5YWq9
 e5mpMQRWzoq0XrPyaVI5EEhvaqWalJwIa6GA7ZksOvS4W1pqFLLyFOKkHejUPou8
 lxcw0dDsyZdmnDRuMA==
 =b0lt
 -----END PGP SIGNATURE-----

Merge tag 'upstream-4.18-rc1' of git://git.infradead.org/linux-ubifs

Pull UBI and UBIFS updates from Richard Weinberger:

 - the UBI on-disk format header file is now dual licensed

 - new way to detect Fastmap problems during runtime

 - bugfix for Fastmap

 - minor updates for UBIFS (spelling, comments, vm_fault_t, ...)

* tag 'upstream-4.18-rc1' of git://git.infradead.org/linux-ubifs:
  mtd: ubi: Update ubi-media.h to dual license
  ubi: fastmap: Detect EBA mismatches on-the-fly
  ubi: fastmap: Check each mapping only once
  ubi: fastmap: Correctly handle interrupted erasures in EBA
  ubi: fastmap: Cancel work upon detach
  ubifs: lpt: Fix wrong pnode number range in comment
  ubifs: gc: Fix typo
  ubifs: log: Some spelling fixes
  ubifs: Spelling fix someting -> something
  ubifs: journal: Remove wrong comment
  ubifs: remove set but never used variable
  ubifs, xattr: remove misguided quota flags
  fs: ubifs: Adding new return type vm_fault_t
2018-06-10 15:52:09 -07:00
Linus Torvalds
f4e70c2e5f MTD changes:
Core changes:
   - Add a sysfs attribute to expose available OOB size
 
   Driver changes:
   - Remove HAS_DMA dependency on various drivers
   - Use dev_get_drvdata() instead of platform_get_drvdata() in docg3
   - Replace msleep by usleep_range() in the dataflash driver
   - Avoid VLA usage in nftl layers
   - Remove useless .owner assignment in pismo
   - Fix various issues in the CFI driver
   - Improve TRX partition handling expose a DT compat for this part
     parser
   - Clarify OFFSET_CONTINUOUS meaning
 
 NAND changes:
   Core changes:
   - Add Miquel as a NAND maintainer
   - Add access mode to the nand_page_io_req struct
   - Fix kernel-doc in rawnand.h
   - Support bit-wise majority to recover from corrupted ONFI parameter
     pages
   - Stop checking FAIL bit after a SET_FEATURES, as documented in the
     ONFI spec
 
   Raw NAND Driver changes:
   - Fix and cleanup the error path of many NAND controller drivers
   - GPMI:
     * Cleanup/simplification of a few aspects in the driver
     * Take ECC setup specified in the DT into account
   - sunxi: remove support for GPIO-based R/B polling
   - MTK:
     * Use of_device_get_match_data() instead of of_match_device()
     * Add an entry in MAINTAINERS for this driver
     * Fix nand-ecc-step-size and nand-ecc-strength description in the DT
       bindings doc
   - fsl_ifc: fix ->cmdfunc() to read more than one ONFI parameter page
 
   OneNAND driver changes:
   - samsung: use dev_get_drvdata() instead of platform_get_drvdata()
 
 SPI NOR changes:
   Core changes:
   - Add support for a bunch of SPI NOR chips
   - Clear EAR reg when switching to 3-byte addressing mode on Winbond
     chips
 
   SPI NOR controller driver changes:
   - cadence: Add DMA support for direct mode reads
   - hisi: Prefix a few functions with hisi_
   - intel:
     * Mark the driver as "dangerous" in Kconfig
     * Fix atomic sequence handling
     * Pass a 40us delay (instead of 0us) to readl_poll_timeout()
   - fsl:
     * fix a typo in a function name
     * add support for IP variants embedded in the ls2080a and ls1080a
       SoCs
   - stm32: request exclusive control of the reset line
 -----BEGIN PGP SIGNATURE-----
 
 iQI5BAABCAAjBQJbGZ/KHBxib3Jpcy5icmV6aWxsb25AYm9vdGxpbi5jb20ACgkQ
 Ze02AX4ItwBhLRAAqj0wXUjyO836NSqYboF21b+eLCLAOojydRCIQjbMYkEQ1ifZ
 vLEwHy8vDYYnJyT+cXlP8wpImh7grhCrq3jPW/SDU2xljUC4TXAAVrfSYw6EJ5at
 TJBum4+DVkTr3ZgBUI/RxDmao0i+29ztK/viHnLEeDziWaFGJqy0C8FtMwFf6MTF
 LwbmCD0KppoLUP0CW/V+fITu8+FBOFsLdDXUi//GIIMeUE3smvGbhXrRZsFoXC3p
 5sgo6Dn3f87uO/fK2x2YNf9uXAb2fRuqnCmXwu+AXEW1NLBzkU0TlxerPxbbrmAR
 wNqBRK/mw+uIILAZgi8tiCRreFYGNNefK+cpf7lqFpZVgBWJJxBMkfy1UdXupUQx
 N/2J+UpGKlGtevvW1CnTXvK0zeXg8FwGREXL4il02Sg57s7IkvG/xIoSN2Nofs9K
 KULDJ8CE1BtH/LwdKHpe7DLzc1I3E8DRzzbVzEzZuW/ukMnqCgouF4wNsjmUJHmm
 KfCNan8CWCU6QyqVIGd3ucm5RXwwaEiMrXxoCmjmkJy8+4eDTYNWgruFSU/adOtU
 lABuvzVzoJ3UKvdxjlirg83EcWrazj4W2/COz+Hpxaa+vAwAPb1GoxyNKqGpdL8p
 lugJOps4rHuFF6xJX/AwSrL5C1cmpuKXICqkErTieKT1YZhpx72v7rFXEK4=
 =cHjU
 -----END PGP SIGNATURE-----

Merge tag 'mtd/for-4.18' of git://git.infradead.org/linux-mtd

Pull MTD updates from Boris Brezillon:
 "Core changes:
   - Add a sysfs attribute to expose available OOB size

  Driver changes:
   - Remove HAS_DMA dependency on various drivers
   - Use dev_get_drvdata() instead of platform_get_drvdata() in docg3
   - Replace msleep by usleep_range() in the dataflash driver
   - Avoid VLA usage in nftl layers
   - Remove useless .owner assignment in pismo
   - Fix various issues in the CFI driver
   - Improve TRX partition handling expose a DT compat for this part
     parser
   - Clarify OFFSET_CONTINUOUS meaning

  NAND core changes:
   - Add Miquel as a NAND maintainer
   - Add access mode to the nand_page_io_req struct
   - Fix kernel-doc in rawnand.h
   - Support bit-wise majority to recover from corrupted ONFI parameter
     pages
   - Stop checking FAIL bit after a SET_FEATURES, as documented in the
     ONFI spec

  Raw NAND Driver changes:
   - Fix and cleanup the error path of many NAND controller drivers
   - GPMI:
      + Cleanup/simplification of a few aspects in the driver
      + Take ECC setup specified in the DT into account
   - sunxi: remove support for GPIO-based R/B polling
   - MTK:
      + Use of_device_get_match_data() instead of of_match_device()
      + Add an entry in MAINTAINERS for this driver
      + Fix nand-ecc-step-size and nand-ecc-strength description in the
        DT bindings doc
   - fsl_ifc: fix ->cmdfunc() to read more than one ONFI parameter page

  OneNAND driver changes:
   - samsung: use dev_get_drvdata() instead of platform_get_drvdata()

  SPI NOR core changes:
   - Add support for a bunch of SPI NOR chips
   - Clear EAR reg when switching to 3-byte addressing mode on Winbond
     chips

  SPI NOR controller driver changes:
   - cadence: Add DMA support for direct mode reads
   - hisi: Prefix a few functions with hisi_
   - intel:
      + Mark the driver as "dangerous" in Kconfig
      + Fix atomic sequence handling
      + Pass a 40us delay (instead of 0us) to readl_poll_timeout()
   - fsl:
      + fix a typo in a function name
      + add support for IP variants embedded in the ls2080a and ls1080a
        SoCs
   - stm32: request exclusive control of the reset line"

* tag 'mtd/for-4.18' of git://git.infradead.org/linux-mtd: (66 commits)
  mtd: nand: Pass mode information to nand_page_io_req
  mtd: cfi_cmdset_0002: Change erase one block to enable XIP once
  mtd: cfi_cmdset_0002: Change erase functions to check chip good only
  mtd: cfi_cmdset_0002: Change erase functions to retry for error
  mtd: cfi_cmdset_0002: Change definition naming to retry write operation
  mtd: cfi_cmdset_0002: Change write buffer to check correct value
  mtd: cmdlinepart: Update comment for introduction of OFFSET_CONTINUOUS
  mtd: bcm47xxpart: add of_match_table with a new DT binding
  dt-bindings: mtd: document Broadcom's BCM47xx partitions
  mtd: spi-nor: Add support for EN25QH32
  mtd: spi-nor: Add support for is25wp series chips
  mtd: spi-nor: Add Winbond w25q32jv support
  mtd: spi-nor: fsl-quadspi: add support for ls2080a/ls1080a
  mtd: spi-nor: stm32-quadspi: explicitly request exclusive reset control
  mtd: spi-nor: intel: provide a range for poll_timout
  mtd: spi-nor: fsl-quadspi: fix api naming typo _init_ahb_read
  mtd: spi-nor: intel-spi: Explicitly mark the driver as dangerous in Kconfig
  mtd: spi-nor: intel-spi: Fix atomic sequence handling
  mtd: rawnand: Do not check FAIL bit when executing a SET_FEATURES op
  mtd: rawnand: use bit-wise majority to recover the ONFI param page
  ...
2018-06-08 10:39:20 -07:00
Boris Brezillon
b771327a45 Core changes:
- Add support for a bunch of SPI NOR chips
 - Clear EAR reg when switching to 3-byte addressing mode on Winbond
   chips
 
 SPI NOR controller driver changes:
 - cadence: Add DMA support for direct mode reads
 - hisi: Prefix a few functions with hisi_
 - intel:
   * Mark the driver as "dangerous" in Kconfig
   * Fix atomic sequence handling
   * Pass a 40us delay (instead of 0us) to readl_poll_timeout()
 - fsl:
   * fix a typo in a function name
   * add support for IP variants embedded in the ls2080a and ls1080a
     SoCs
 - stm32: request exclusive control of the reset line
 -----BEGIN PGP SIGNATURE-----
 
 iQI5BAABCAAjBQJbFQHqHBxib3Jpcy5icmV6aWxsb25AYm9vdGxpbi5jb20ACgkQ
 Ze02AX4ItwAIyBAAw1y6oLc4WcA6//0+sxB9RaYxpng+8n2ExTxcvfc1jd23e5te
 BRc74YJtbBBe27kkfuhrDLHoTzHMYicB4KA7E4o8JIvIKxfUlY8nP508JAexGEpK
 wcSNzqjk8zvAZrZ3Uc3xk1wZcYlc4uYAI2XuOjRrW7JFDdKDqSV0NbdjI0V0YFUk
 n/UQ+m5U1xUilp1IszkU/OdJ7ho1qcxWOC0sqCBXIJ2RrOMQzz3kYF/M9CNZzpth
 C7zXBVZtJVoy4K6Ibzoudvqcl4TiVu1eMjLPO3FPT3wf73OBPoo9gHvDaw8MqAJw
 6Zeu1qbIwEXyR5K3/jlRN2CPkl1tNXqkrZ2CqK6OvLHI1cP99IBQFTbN4aWDm86v
 tf3Gam7zthWALIkqiAug1tZA4TdFI0ZN6MCBYsfGeeZKF+T22LkkyLseCrVYR28i
 W2UQDohKyvVE8OVimFdPtjvH9KKJE03hbseTU8D0kOGViptqmidb0Bci6hWqNzxg
 0FRWu+LVVd6fDdovKTpuEMS5PJJ5jgjpy/Ch9rRvbqVPC7ZTMwOI5i9sjLcrZ8/v
 6InJcBkg+HG5fedzBi15hRtm/XRwJgoI4jJbAgmu3F/92nmMP2lO4ACRUqhgEDN/
 gi+UnVA8+aDMJt22c1FHveKVtheTiZNkMFtY16qYYJFmnOuS4jWyTWinihQ=
 =eIAQ
 -----END PGP SIGNATURE-----

Merge tag 'spi-nor/for-4.18' of git://git.infradead.org/linux-mtd into mtd/next

Core changes:
- Add support for a bunch of SPI NOR chips
- Clear EAR reg when switching to 3-byte addressing mode on Winbond
  chips

SPI NOR controller driver changes:
- cadence: Add DMA support for direct mode reads
- hisi: Prefix a few functions with hisi_
- intel:
  * Mark the driver as "dangerous" in Kconfig
  * Fix atomic sequence handling
  * Pass a 40us delay (instead of 0us) to readl_poll_timeout()
- fsl:
  * fix a typo in a function name
  * add support for IP variants embedded in the ls2080a and ls1080a
    SoCs
- stm32: request exclusive control of the reset line
2018-06-07 22:53:15 +02:00
Boris Brezillon
6e89b84e28 Core changes:
- Add Miquel as a NAND maintainer
 - Add access mode to the nand_page_io_req struct
 - Fix kernel-doc in rawnand.h
 - Support bit-wise majority to recover from corrupted ONFI parameter
   pages
 - Stop checking FAIL bit after a SET_FEATURES, as documented in the
   ONFI spec
 
 Raw NAND Driver changes:
 - Fix and cleanup the error path of many NAND controller drivers
 - GPMI:
   * Cleanup/simplification of a few aspects in the driver
   * Take ECC setup specified in the DT into account
 - sunxi: remove support for GPIO-based R/B polling
 - MTK:
   * Use of_device_get_match_data() instead of of_match_device()
   * Add an entry in MAINTAINERS for this driver
   * Fix nand-ecc-step-size and nand-ecc-strength description in the DT
     bindings doc
 - fsl_ifc: fix ->cmdfunc() to read more than one ONFI parameter page
 
 OneNAND driver changes:
 - samsung: use dev_get_drvdata() instead of platform_get_drvdata()
 -----BEGIN PGP SIGNATURE-----
 
 iQI5BAABCAAjBQJbFP6lHBxib3Jpcy5icmV6aWxsb25AYm9vdGxpbi5jb20ACgkQ
 Ze02AX4ItwBVzRAAotaLsXzKMQXwDSTkRdTNFtpCuzgmmqO22PyKWai7lYAN29D4
 1g4V9UGkKxp5Wiy5iWADze41uxoOOZjlhxghnUNtqTLeB6FtAByBSai7hqV6jVwR
 QhSaf24a/bWcpmvMkYUM+odztwcFR1T1uq21JxDzMnt35RFG/Td4Fh7hz1eLxksB
 x7t3uiDDz5MoPo6/EGuw4MychXoYUnWxm6JNUQsQdZvAEBo1Rqd/8OIy+BHMH6BY
 GlNKJJtdhXoSmX1G48HzwB2FZdxwcaJT36Zcu1DgzWSN/Ivx6oKQDFPDzCAcg3S8
 7yUUNX1X2HavhVMiINi0lgLpI7kwiwl2bYZtHO5xUycHh9EKdgBiesQ1OkXg8w4Q
 zTJQH2krpS44VDa/iJhrc/zGnBPWn8jPScswZ89doymwkZA1pBfFjKoPvJVybvtv
 h84FAMHORpfyf9FHZhs72RFihy/pHPTtQlQpDl4o8e+vjne1+nCfCgBpXucjtUMK
 z99R/6//38StdWlGJCTapZ9Veg0lMiMWPNLWuOrIkzMY3GuEQjq2qjF1BCLs0Di9
 fUPo5VLtijL0vuR4YXg2XkXQ8qrqUrZjgxHUlhBsj31s3EGBDkPErkoDTdtN2rJF
 38jwPwSqIoMfOlRRkqq5FGopXrWMS5NEZkEdmVoymYZdauwCTuozGP8Xz7k=
 =MzWF
 -----END PGP SIGNATURE-----

Merge tag 'nand/for-4.18' of git://git.infradead.org/linux-mtd into mtd/next

Core changes:
- Add Miquel as a NAND maintainer
- Add access mode to the nand_page_io_req struct
- Fix kernel-doc in rawnand.h
- Support bit-wise majority to recover from corrupted ONFI parameter
  pages
- Stop checking FAIL bit after a SET_FEATURES, as documented in the
  ONFI spec

Raw NAND Driver changes:
- Fix and cleanup the error path of many NAND controller drivers
- GPMI:
  * Cleanup/simplification of a few aspects in the driver
  * Take ECC setup specified in the DT into account
- sunxi: remove support for GPIO-based R/B polling
- MTK:
  * Use of_device_get_match_data() instead of of_match_device()
  * Add an entry in MAINTAINERS for this driver
  * Fix nand-ecc-step-size and nand-ecc-strength description in the DT
    bindings doc
- fsl_ifc: fix ->cmdfunc() to read more than one ONFI parameter page

OneNAND driver changes:
- samsung: use dev_get_drvdata() instead of platform_get_drvdata()
2018-06-07 22:52:56 +02:00
Lionel Debieve
f5a926dd52 mtd: ubi: Update ubi-media.h to dual license
Update license template using SPDX. Move the global layout
of UBI headers to dual license helping UBI to be the standard
solution for raw NAND management.

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Artem Bityutskiy <dedekind1@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2018-06-07 15:53:17 +02:00
Richard Weinberger
3e5e4335cc ubi: fastmap: Detect EBA mismatches on-the-fly
Now we have the machinery to detect EBA mismatches on-the-fly
by comparing the in-memory volume ID and LEB number with the found
VID header.
This helps to detect malfunction of Fastmap.

Signed-off-by: Richard Weinberger <richard@nod.at>
2018-06-07 15:53:17 +02:00
Richard Weinberger
34653fd8c4 ubi: fastmap: Check each mapping only once
Maintain a bitmap to keep track of which LEB->PEB mapping
was checked already.
That way we have to read back VID headers only once.

Signed-off-by: Richard Weinberger <richard@nod.at>
2018-06-07 15:53:16 +02:00
Richard Weinberger
781932375f ubi: fastmap: Correctly handle interrupted erasures in EBA
Fastmap cannot track the LEB unmap operation, therefore it can
happen that after an interrupted erasure the mapping still looks
good from Fastmap's point of view, while reading from the PEB will
cause an ECC error and confuses the upper layer.

Instead of teaching users of UBI how to deal with that, we read back
the VID header and check for errors. If the PEB is empty or shows ECC
errors we fixup the mapping and schedule the PEB for erasure.

Fixes: dbb7d2a88d ("UBI: Add fastmap core")
Cc: <stable@vger.kernel.org>
Reported-by: martin bayern <Martinbayern@outlook.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2018-06-07 15:53:16 +02:00
Richard Weinberger
6e7d801610 ubi: fastmap: Cancel work upon detach
Ben Hutchings pointed out that 29b7a6fa1e ("ubi: fastmap: Don't flush
fastmap work on detach") does not really fix the problem, it just
reduces the risk to hit the race window where fastmap work races against
free()'ing ubi->volumes[].

The correct approach is making sure that no more fastmap work is in
progress before we free ubi data structures.
So we cancel fastmap work right after the ubi background thread is
stopped.
By setting ubi->thread_enabled to zero we make sure that no further work
tries to wake the thread.

Fixes: 29b7a6fa1e ("ubi: fastmap: Don't flush fastmap work on detach")
Fixes: 74cdaf2400 ("UBI: Fastmap: Fix memory leaks while closing the WL sub-system")
Cc: stable@vger.kernel.org
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Cc: Martin Townsend <mtownsend1973@gmail.com>

Signed-off-by: Richard Weinberger <richard@nod.at>
2018-06-07 15:53:16 +02:00
Linus Torvalds
2857676045 - Introduce arithmetic overflow test helper functions (Rasmus)
- Use overflow helpers in 2-factor allocators (Kees, Rasmus)
 - Introduce overflow test module (Rasmus, Kees)
 - Introduce saturating size helper functions (Matthew, Kees)
 - Treewide use of struct_size() for allocators (Kees)
 -----BEGIN PGP SIGNATURE-----
 Comment: Kees Cook <kees@outflux.net>
 
 iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAlsYJ1gWHGtlZXNjb29r
 QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJlCTEACwdEeriAd2VwxknnsstojGD/3g
 8TTFA19vSu4Gxa6WiDkjGoSmIlfhXTlZo1Nlmencv16ytSvIVDNLUIB3uDxUIv1J
 2+dyHML9JpXYHHR7zLXXnGFJL0wazqjbsD3NYQgXqmun7EVVYnOsAlBZ7h/Lwiej
 jzEJd8DaHT3TA586uD3uggiFvQU0yVyvkDCDONIytmQx+BdtGdg9TYCzkBJaXuDZ
 YIthyKDvxIw5nh/UaG3L+SKo73tUr371uAWgAfqoaGQQCWe+mxnWL4HkCKsjFzZL
 u9ouxxF/n6pij3E8n6rb0i2fCzlsTDdDF+aqV1rQ4I4hVXCFPpHUZgjDPvBWbj7A
 m6AfRHVNnOgI8HGKqBGOfViV+2kCHlYeQh3pPW33dWzy/4d/uq9NIHKxE63LH+S4
 bY3oO2ela8oxRyvEgXLjqmRYGW1LB/ZU7FS6Rkx2gRzo4k8Rv+8K/KzUHfFVRX61
 jEbiPLzko0xL9D53kcEn0c+BhofK5jgeSWxItdmfuKjLTW4jWhLRlU+bcUXb6kSS
 S3G6aF+L+foSUwoq63AS8QxCuabuhreJSB+BmcGUyjthCbK/0WjXYC6W/IJiRfBa
 3ZTxBC/2vP3uq/AGRNh5YZoxHL8mSxDfn62F+2cqlJTTKR/O+KyDb1cusyvk3H04
 KCDVLYPxwQQqK1Mqig==
 =/3L8
 -----END PGP SIGNATURE-----

Merge tag 'overflow-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull overflow updates from Kees Cook:
 "This adds the new overflow checking helpers and adds them to the
  2-factor argument allocators. And this adds the saturating size
  helpers and does a treewide replacement for the struct_size() usage.
  Additionally this adds the overflow testing modules to make sure
  everything works.

  I'm still working on the treewide replacements for allocators with
  "simple" multiplied arguments:

     *alloc(a * b, ...) -> *alloc_array(a, b, ...)

  and

     *zalloc(a * b, ...) -> *calloc(a, b, ...)

  as well as the more complex cases, but that's separable from this
  portion of the series. I expect to have the rest sent before -rc1
  closes; there are a lot of messy cases to clean up.

  Summary:

   - Introduce arithmetic overflow test helper functions (Rasmus)

   - Use overflow helpers in 2-factor allocators (Kees, Rasmus)

   - Introduce overflow test module (Rasmus, Kees)

   - Introduce saturating size helper functions (Matthew, Kees)

   - Treewide use of struct_size() for allocators (Kees)"

* tag 'overflow-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  treewide: Use struct_size() for devm_kmalloc() and friends
  treewide: Use struct_size() for vmalloc()-family
  treewide: Use struct_size() for kmalloc()-family
  device: Use overflow helpers for devm_kmalloc()
  mm: Use overflow helpers in kvmalloc()
  mm: Use overflow helpers in kmalloc_array*()
  test_overflow: Add memory allocation overflow tests
  overflow.h: Add allocation size calculation helpers
  test_overflow: Report test failures
  test_overflow: macrofy some more, do more tests for free
  lib: add runtime test of check_*_overflow functions
  compiler.h: enable builtin overflow checkers and add fallback code
2018-06-06 17:27:14 -07:00
Kees Cook
0ed2dd03b9 treewide: Use struct_size() for devm_kmalloc() and friends
Replaces open-coded struct size calculations with struct_size() for
devm_*, f2fs_*, and sock_* allocations. Automatically generated (and
manually adjusted) from the following Coccinelle script:

// Direct reference to struct field.
@@
identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc";
expression HANDLE;
expression GFP;
identifier VAR, ELEMENT;
expression COUNT;
@@

- alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(*VAR->ELEMENT), GFP)
+ alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP)

// mr = kzalloc(sizeof(*mr) + m * sizeof(mr->map[0]), GFP_KERNEL);
@@
identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc";
expression HANDLE;
expression GFP;
identifier VAR, ELEMENT;
expression COUNT;
@@

- alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(VAR->ELEMENT[0]), GFP)
+ alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP)

// Same pattern, but can't trivially locate the trailing element name,
// or variable name.
@@
identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc";
expression HANDLE;
expression GFP;
expression SOMETHING, COUNT, ELEMENT;
@@

- alloc(HANDLE, sizeof(SOMETHING) + COUNT * sizeof(ELEMENT), GFP)
+ alloc(HANDLE, CHECKME_struct_size(&SOMETHING, ELEMENT, COUNT), GFP)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-06 11:15:43 -07:00
Linus Torvalds
25d80be86c Refactors rslib and callers to provide a per-instance allocation area
instead of performing VLAs on the stack.
 -----BEGIN PGP SIGNATURE-----
 Comment: Kees Cook <kees@outflux.net>
 
 iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAlsUv+MWHGtlZXNjb29r
 QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJsL4D/0arl2+HZtG3GV6zMHbH1T3J0a3
 mZojEEZqgByx0vlN/Ai57YK4ADHKlF3oYqpXamc718iAmDfKgvbdG+IPv6hg0MQR
 c6F+ogSbcZ38vY7t08Iaa9cBQcKFJwJGAbYXyKV6dKp0ddPqNBBxHG0CLSWL+3DE
 ZxKRKQFQKZWJR587CjA9geZOImgYJG8Jq9Ue4fp1fKacBEBiZTtI/Y8C4XlrxZz6
 6p7BdarMXKqxW8B8vpE4xfCCkm8QGAfEuAXzMrqFLZhj48bg7+Tqd3d4AHm28hMp
 Q2eHyS9j4wWN+OxA1R+VIuzciz/vfWZJi1N7zSV8LznPPLICX8Vl4gXw+MkrELYV
 vzZRlRH67E993bsj0Xp65w7Zwc3MJKVfJOUq+3qR3I1JytCSOBsLs2w/VE2bzpeO
 jFD4gUJxYnl5s2UnCiHVgUzbgXE/n+JQS3Acf71qfAsb+Ld2/q9Tyjx7p7sm5IfB
 m/lokrSgBajtHPZfB6pQV2AvaoLIbWW9Lf1p84zA6XAwdAnAESffUGQHEK/W02a7
 ftwxXnOvjgRZJ/lUfOb0GQDgQniXO7cN7AcmKAfL+DNZb0j86esR6PuZDCIeDhTJ
 KcTVcwPtFnI4W+H3vagh+mLHf7bL/RgLngjUZd6PHqS+cVQfKFiNe43zlRl9+eRj
 U20+w5VfwSkrmAgfSw==
 =Z1if
 -----END PGP SIGNATURE-----

Merge tag 'rslib-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull reed-salomon library updates from Kees Cook:
 "Refactors rslib and callers to provide a per-instance allocation area
  instead of performing VLAs on the stack"

* tag 'rslib-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  rslib: Allocate decoder buffers to avoid VLAs
  mtd: rawnand: diskonchip: Allocate rs control per instance
  rslib: Split rs control struct
  rslib: Simplify error path
  rslib: Remove GPL boilerplate
  rslib: Add SPDX identifiers
  rslib: Cleanup top level comments
  rslib: Cleanup whitespace damage
  dm/verity_fec: Use GFP aware reed solomon init
  rslib: Add GFP aware init function
2018-06-05 10:48:05 -07:00
Linus Torvalds
cfd12db4f1 spi: Updates for v4.18
Quite a busy release for SPI, mainly as a result of Boris Brezillon's
 work on improving the integration with MTD for accelerated SPI flash
 controllers.  He's added a new spi_mem interface which works a lot
 better with general hardware and converted the users over to it, as a
 result of this work we've got some MTD changes in here as well.
 
 Other highlights include:
 
  - Lots of spring cleaning for the s3c64xx driver.
  - Removal of the bcm53xx, the hardware is also supported by the mspi
    driver but SoC naming had caused people to miss the duplication.
  - Conversion of the pxa2xx driver to use the standard message
    processing loop rather than open coding.
  - A bunch of improvements to the runtime PM of the OMAP McSPI driver.
 -----BEGIN PGP SIGNATURE-----
 
 iQFHBAABCgAxFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAlsVG2cTHGJyb29uaWVA
 a2VybmVsLm9yZwAKCRAk1otyXVSH0D6eB/9VOpypnB2Yxa64X2NzP05sRhg2rqMB
 0Rwc0r/98PH5GkmA8286oT39zq04PIYoGdTPpJEe/Tza8errJcM8ccCFv74DbJIp
 Yws4+GsibY5TfYCzh4AiD2oHna714AKA/r858utnZOlYPZ3JP8tn708+LiTjxhkY
 RbxCBcqQjBszmYaDCo2iQFxWO4YAUBkDgJvRf/1Q7n5sRa0YhO7z1NG/lVMb1BYh
 m56YnGki4ZgJsbn6agxPC1OX/+by8p0q7bqSf6BnTiiv9ErXLjQLrFOdkzYvdBHg
 /82+TETmgpNxg9iKJeeyss6EmnVJsjrd/tRjq6WMK/Ac5HHiv9t0VBs6
 =QCbn
 -----END PGP SIGNATURE-----

Merge tag 'spi-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Quite a busy release for SPI, mainly as a result of Boris Brezillon's
  work on improving the integration with MTD for accelerated SPI flash
  controllers. He's added a new spi_mem interface which works a lot
  better with general hardware and converted the users over to it, as a
  result of this work we've got some MTD changes in here as well.

  Other highlights include:

   - Lots of spring cleaning for the s3c64xx driver.

   - Removal of the bcm53xx, the hardware is also supported by the mspi
     driver but SoC naming had caused people to miss the duplication.

   - Conversion of the pxa2xx driver to use the standard message
     processing loop rather than open coding.

   - A bunch of improvements to the runtime PM of the OMAP McSPI driver"

* tag 'spi-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (47 commits)
  spi: Fix typo on SPI_MEM help text
  spi: sh-msiof: Fix setting SIRMDR1.SYNCAC to match SITMDR1.SYNCAC
  mtd: devices: m25p80: Use spi_mem_set_drvdata() instead of spi_set_drvdata()
  spi: omap2-mcspi: Remove unnecessary pm_runtime_force_suspend()
  spi: Add missing pm_runtime_put_noidle() after failed get
  spi: ti-qspi: Make sure res_mmap != NULL before dereferencing it
  spi: spi-s3c64xx: Fix system resume support
  spi: bcm-qspi: Fix build failure caused by spi_flash_read() API removal
  spi: Get rid of the spi_flash_read() API
  mtd: spi-nor: Use the spi_mem_xx() API
  spi: ti-qspi: Implement the spi_mem interface
  spi: bcm-qspi: Implement the spi_mem interface
  spi: Make support for regular transfers optional when ->mem_ops != NULL
  spi: Extend the core to ease integration of SPI memory controllers
  spi: remove forgotten CONFIG_SPI_BCM53XX
  spi: remove the older/duplicated bcm53xx driver
  spi: pxa2xx: check clk_prepare_enable() return value
  spi: lpspi: Switch to SPDX identifier
  spi: mxs: Switch to SPDX identifier
  spi: imx: Switch to SPDX identifier
  ...
2018-06-04 11:34:06 -07:00
Linus Torvalds
cf626b0da7 Merge branch 'hch.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull procfs updates from Al Viro:
 "Christoph's proc_create_... cleanups series"

* 'hch.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (44 commits)
  xfs, proc: hide unused xfs procfs helpers
  isdn/gigaset: add back gigaset_procinfo assignment
  proc: update SIZEOF_PDE_INLINE_NAME for the new pde fields
  tty: replace ->proc_fops with ->proc_show
  ide: replace ->proc_fops with ->proc_show
  ide: remove ide_driver_proc_write
  isdn: replace ->proc_fops with ->proc_show
  atm: switch to proc_create_seq_private
  atm: simplify procfs code
  bluetooth: switch to proc_create_seq_data
  netfilter/x_tables: switch to proc_create_seq_private
  netfilter/xt_hashlimit: switch to proc_create_{seq,single}_data
  neigh: switch to proc_create_seq_data
  hostap: switch to proc_create_{seq,single}_data
  bonding: switch to proc_create_seq_data
  rtc/proc: switch to proc_create_single_data
  drbd: switch to proc_create_single
  resource: switch to proc_create_seq_data
  staging/rtl8192u: simplify procfs code
  jfs: simplify procfs code
  ...
2018-06-04 10:00:01 -07:00
Linus Torvalds
f459c34538 for-4.18/block-20180603
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABCAAGBQJbFIrHAAoJEPfTWPspceCm2+kQAKo7o7HL30aRxJYu+gYafkuW
 PV47zr3e4vhMDEzDaMsh1+V7I7bm3uS+NZu6cFbcV+N9KXFpeb4V4Hvvm5cs+OC3
 WCOBi4eC1h4qnDQ3ZyySrCMN+KHYJ16pZqddEjqw+fhVudx8i+F+jz3Y4ZMDDc3q
 pArKZvjKh2wEuYXUMFTjaXY46IgPt+er94OwvrhyHk+4AcA+Q/oqSfSdDahUC8jb
 BVR3FV4I3NOHUaru0RbrUko13sVZSboWPCIFrlTDz8xXcJOnVHzdVS1WLFDXLHnB
 O8q9cADCfa4K08kz68RxykcJiNxNvz5ChDaG0KloCFO+q1tzYRoXLsfaxyuUDg57
 Zd93OFZC6hAzXdhclDFIuPET9OQIjDzwphodfKKmDsm3wtyOtydpA0o7JUEongp0
 O1gQsEfYOXmQsXlo8Ot+Z7Ne/HvtGZ91JahUa/59edxQbcKaMrktoyQsQ/d1nOEL
 4kXID18wPcFHWRQHYXyVuw6kbpRtQnh/U2m1eenSZ7tVQHwoe6mF3cfSf5MMseak
 k8nAnmsfEvOL4Ar9ftg61GOrImaQlidxOC2A8fmY5r0Sq/ZldvIFIZizsdTTCcni
 8SOTxcQowyqPf5NvMNQ8cKqqCJap3ppj4m7anZNhbypDIF2TmOWsEcXcMDn4y9on
 fax14DPLo59gBRiPCn5f
 =nga/
 -----END PGP SIGNATURE-----

Merge tag 'for-4.18/block-20180603' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - clean up how we pass around gfp_t and
   blk_mq_req_flags_t (Christoph)

 - prepare us to defer scheduler attach (Christoph)

 - clean up drivers handling of bounce buffers (Christoph)

 - fix timeout handling corner cases (Christoph/Bart/Keith)

 - bcache fixes (Coly)

 - prep work for bcachefs and some block layer optimizations (Kent).

 - convert users of bio_sets to using embedded structs (Kent).

 - fixes for the BFQ io scheduler (Paolo/Davide/Filippo)

 - lightnvm fixes and improvements (Matias, with contributions from Hans
   and Javier)

 - adding discard throttling to blk-wbt (me)

 - sbitmap blk-mq-tag handling (me/Omar/Ming).

 - remove the sparc jsflash block driver, acked by DaveM.

 - Kyber scheduler improvement from Jianchao, making it more friendly
   wrt merging.

 - conversion of symbolic proc permissions to octal, from Joe Perches.
   Previously the block parts were a mix of both.

 - nbd fixes (Josef and Kevin Vigor)

 - unify how we handle the various kinds of timestamps that the block
   core and utility code uses (Omar)

 - three NVMe pull requests from Keith and Christoph, bringing AEN to
   feature completeness, file backed namespaces, cq/sq lock split, and
   various fixes

 - various little fixes and improvements all over the map

* tag 'for-4.18/block-20180603' of git://git.kernel.dk/linux-block: (196 commits)
  blk-mq: update nr_requests when switching to 'none' scheduler
  block: don't use blocking queue entered for recursive bio submits
  dm-crypt: fix warning in shutdown path
  lightnvm: pblk: take bitmap alloc. out of critical section
  lightnvm: pblk: kick writer on new flush points
  lightnvm: pblk: only try to recover lines with written smeta
  lightnvm: pblk: remove unnecessary bio_get/put
  lightnvm: pblk: add possibility to set write buffer size manually
  lightnvm: fix partial read error path
  lightnvm: proper error handling for pblk_bio_add_pages
  lightnvm: pblk: fix smeta write error path
  lightnvm: pblk: garbage collect lines with failed writes
  lightnvm: pblk: rework write error recovery path
  lightnvm: pblk: remove dead function
  lightnvm: pass flag on graceful teardown to targets
  lightnvm: pblk: check for chunk size before allocating it
  lightnvm: pblk: remove unnecessary argument
  lightnvm: pblk: remove unnecessary indirection
  lightnvm: pblk: return NVM_ error on failed submission
  lightnvm: pblk: warn in case of corrupted write buffer
  ...
2018-06-04 07:58:06 -07:00
Tokunori Ikegami
c64d4419a1 mtd: cfi_cmdset_0002: Change erase one block to enable XIP once
To enable XIP it is executed both normal and error cases.
This call can be moved after the for loop as same with erase chip.

Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp>
Reviewed-by: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-30 21:38:29 +02:00
Tokunori Ikegami
79ca484b61 mtd: cfi_cmdset_0002: Change erase functions to check chip good only
Currently the functions use to check both chip ready and good.
But the chip ready is not enough to check the operation status.
So change this to check the chip good instead of this.
About the retry functions to make sure the error handling remain it.

Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp>
Reviewed-by: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Cc: linux-mtd@lists.infradead.org
Cc: stable@vger.kernel.org
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-30 21:38:27 +02:00
Tokunori Ikegami
45f75b8a91 mtd: cfi_cmdset_0002: Change erase functions to retry for error
For the word write functions it is retried for error.
But it is not implemented to retry for the erase functions.
To make sure for the erase functions change to retry as same.

This is needed to prevent the flash erase error caused only once.
It was caused by the error case of chip_good() in the do_erase_oneblock().
Also it was confirmed on the MACRONIX flash device MX29GL512FHT2I-11G.
But the error issue behavior is not able to reproduce at this moment.
The flash controller is parallel Flash interface integrated on BCM53003.

Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp>
Reviewed-by: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Cc: linux-mtd@lists.infradead.org
Cc: stable@vger.kernel.org
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-30 21:38:25 +02:00
Tokunori Ikegami
85a82e28b0 mtd: cfi_cmdset_0002: Change definition naming to retry write operation
The definition can be used for other program and erase operations also.
So change the naming to MAX_RETRIES from MAX_WORD_RETRIES.

Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp>
Reviewed-by: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Cc: linux-mtd@lists.infradead.org
Cc: stable@vger.kernel.org
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-30 21:38:22 +02:00
Tokunori Ikegami
dfeae10735 mtd: cfi_cmdset_0002: Change write buffer to check correct value
For the word write it is checked if the chip has the correct value.
But it is not checked for the write buffer as only checked if ready.
To make sure for the write buffer change to check the value.

It is enough as this patch is only checking the last written word.
Since it is described by data sheets to check the operation status.

Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp>
Reviewed-by: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Cc: linux-mtd@lists.infradead.org
Cc: stable@vger.kernel.org
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-30 21:38:19 +02:00
Olof Johansson
8787ad3563 DaVinci SoC support updates for v4.18
Mainly contains patches to move NAND chipselect to platform data
 (currently platform device id is being used). These patches have
 been acked by NAND maintainer and because of the driver dependency
 an immutable branch has been provided to Boris.
 
 The other patch is to remove an unnecessary postcore_initcall() on
 DM644x which is needed for common clock framework conversion.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJa/DYkAAoJEGFBu2jqvgRN3nQP/1IGbkmkCMtBRJcni7Es+x2p
 ntxG+NylyyQPMseZNPk3k1MBP9g9+kecpt22p/SDJVgY93+UU90UcUO+WSkqBEiy
 E/r+Mzj0EYmyY48dFo5v6dv5ED7lGSqtT0PywA5JCuVJ7Mzs3uHeBlKvhWgdcuSw
 McmjXLuyjHybXbpVuDFZ1vSDfmpMO2NskLtpIjIMR8Hk7pNXv+/6FEM5nJiQzSmO
 rIMdbEr4+Oqk+y5dWEY4GptSeCIOWiUrjQY3Hi8sLvUc7NVAsOchXcfnDeAI7otJ
 NvI2SOgmqiMHmoeWdxAlttt/guhUInWE2HOjGuCs/QEzx5ZXk1xsPAevvcjwtWdz
 C4bEK8nMLnXZ6Qd/vXSlQOlGhCBhxCms4pz7VJMeWdG1VXOIU7I7RYScPklA0UfA
 SUaHwrdvHOCMy0k3fbiPsv/vxwGvWZxsBDG5QF2geqQufo4lZMS6WgvB83Z5900Q
 rw+51Y44G8YpXlZKQrOZ+QzP4PP14FV/BuWeoBy+xXEZZSRghwJrADJcSI/+2KA9
 nCcxJgy66wJV4e96e4EXXRbyeVZjGmIp6gyMQsK67bAQ9/Kak4Dtv2VmI7ugbBcl
 HAFWfmXgC23+jYKTLQIZOPub8qaBIAx1zkKs+LWWoHW482QoHHLn7j9Dw26RKwST
 4smKyrDuM7NoxLZhnwrl
 =iWsm
 -----END PGP SIGNATURE-----

Merge tag 'davinci-for-v4.18/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/soc

DaVinci SoC support updates for v4.18

Mainly contains patches to move NAND chipselect to platform data
(currently platform device id is being used). These patches have
been acked by NAND maintainer and because of the driver dependency
an immutable branch has been provided to Boris.

The other patch is to remove an unnecessary postcore_initcall() on
DM644x which is needed for common clock framework conversion.

* tag 'davinci-for-v4.18/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci: dm644x: remove unnecessary postcore_initcall()
  ARM: davinci: aemif: stop using pdev->id as nand chipselect
  mtd: rawnand: davinci: stop using pdev->id as chipselect
  ARM: davinci: neuros-osd2: specify the chipselect in davinci_nand_pdata
  ARM: davinci: dm646x-evm: specify the chipselect in davinci_nand_pdata
  ARM: davinci: mityomapl138: specify the chipselect in davinci_nand_pdata
  ARM: davinci: dm644x-evm: specify the chipselect in davinci_nand_pdata
  ARM: davinci: dm365-evm: specify the chipselect in davinci_nand_pdata
  ARM: davinci: dm355-leopard: specify the chipselect in davinci_nand_pdata
  ARM: davinci: dm355-evm: specify the chipselect in davinci_nand_pdata
  ARM: davinci: da850-evm: specify the chipselect in davinci_nand_pdata
  ARM: davinci: da830-evm: specify the chipselect in davinci_nand_pdata
  mtd: rawnand: davinci: store the core chipselect number in platform data

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-05-25 04:57:56 -07:00
Geert Uytterhoeven
34c819073c mtd: cmdlinepart: Update comment for introduction of OFFSET_CONTINUOUS
The comment about offset zero was not updated when changing behavior:
  - Automatic offset calculation is indicated by OFFSET_CONTINUOUS,
  - Zero really means offset zero.

Fixes: b175d03dd2 ("[PATCH] mtd cmdlinepart: allow zero offset value")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-23 10:08:48 +02:00
Rafał Miłecki
cf589ce71e mtd: bcm47xxpart: add of_match_table with a new DT binding
This allows using bcm47xxpart parser to find partitions on flash
described in DT using the "brcm,bcm947xx-cfe-partitions" compatible
property. It means this parser doesn't have to be explicitly selected by
a flash driver anymore. It can be used e.g. together with a generic
m25p80 / spi-nor if device is just properly described.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-23 10:08:46 +02:00
Boris Brezillon
1e07392e7b
mtd: devices: m25p80: Use spi_mem_set_drvdata() instead of spi_set_drvdata()
SPI mem drivers should use spi_mem_set_drvdata() not spi_set_drvdata()
to store their private data. Using spi_set_drvdata() will mess the
spi -> spi-mem link up and cause a kernel panic at shutdown or
device removal time.

Fixes: 4120f8d158 ("mtd: spi-nor: Use the spi_mem_xx() API")
Reported-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Marek Vasut <marek.vasut+renesas@gmail.com> on R8A7791 Porter
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-05-22 11:56:34 +01:00
YuheiOKAWA
771ff17e82 mtd: spi-nor: Add support for EN25QH32
Add support for Eon en25qh32 spi nor flash.

Signed-off-by: YuheiOKAWA <tochiro.srchack@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-18 13:38:53 +02:00
Kimmo Rautkoski
d616f81cdd mtd: spi-nor: Add support for is25wp series chips
Added support for is25wp032, is25wp064 and is25wp128.

Signed-off-by: Kimmo Rautkoski <ext-kimmo.rautkoski@vaisala.com>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-18 13:33:22 +02:00
Stephen Douthit
7fccf56ea4 mtd: spi-nor: Add Winbond w25q32jv support
Datasheet:
https://www.winbond.com/resource-files/w25q32jv%20dtr%20revf%2002242017.pdf

Minimal testing done with fw_printenv/fw_setenv, test board did not
support dual or quad access.

Signed-off-by: Stephen Douthit <stephend@silicom-usa.com>
Tested-by: Stephen Douthit <stephend@silicom-usa.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-18 13:25:50 +02:00
Yogesh Gaur
d728a7ea90 mtd: spi-nor: fsl-quadspi: add support for ls2080a/ls1080a
LS2080a/LS1088a supports Freescale Quad SPI controller.
Add fsl-quadspi driver support for ls2080a and ls1088a chip.

Signed-off-by: Suresh Gupta <suresh.gupta@nxp.com>
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-18 13:12:53 +02:00
Philipp Zabel
3278aa0ec3 mtd: spi-nor: stm32-quadspi: explicitly request exclusive reset control
Commit a53e35db70 ("reset: Ensure drivers are explicit when requesting
reset lines") started to transition the reset control request API calls
to explicitly state whether the driver needs exclusive or shared reset
control behavior. Convert all drivers requesting exclusive resets to the
explicit API call so the temporary transition helpers can be removed.

No functional changes.

Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-18 13:03:36 +02:00
Nicholas Mc Guire
aba3a882a1 mtd: spi-nor: intel: provide a range for poll_timout
The overall poll time here is INTEL_SPI_TIMEOUT * 1000 which is
5000 * 1000 - so 5seconds and it is coded as a tight loop here delay_us
to readl_poll_timeout() is set to 0. As this is never called in an atomic
context sleeping should be no issue and there is no reasons for the
tight-loop here.

Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-18 12:53:33 +02:00
Yogesh Gaur
dd50a1c4e5 mtd: spi-nor: fsl-quadspi: fix api naming typo _init_ahb_read
Fix api naming typo _init_ahb_read
fsl_qspi_init_abh_read --> fsl_qspi_init_ahb_read

Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
Acked-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-18 12:53:23 +02:00
Mika Westerberg
1f37033f05 mtd: spi-nor: intel-spi: Explicitly mark the driver as dangerous in Kconfig
The driver is not meant for normal users at all but instead such users
who really know what they are doing and are able to build their own
kernel to enable it. Mark both driver Kconfig entries as dangerous to
make sure the driver is not accidentally enabled without understanding
possible consequences in doing so.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-18 12:53:15 +02:00
Mika Westerberg
c7d6a82d90 mtd: spi-nor: intel-spi: Fix atomic sequence handling
On many older systems using SW sequencer the PREOP_OPTYPE register
contains two preopcodes as following:

  PREOP_OPTYPE=0xf2785006

The last two bytes are the opcodes decoded to:

  0x50 - Write enable for volatile status register
  0x06 - Write enable

The former is used to modify volatile bits in the status register. For
non-volatile bits the latter is needed. Preopcodes are used in SW
sequencer to send one command "atomically" without anything else
interfering the transfer. The sequence that gets executed is:

  - Send preopcode (write enable) from PREOP_OPTYPE register
  - Send the actual SPI command
  - Poll busy bit in the status register (0x05, RDSR)

Commit 8c473dd61b ("spi-nor: intel-spi: Don't assume OPMENU0/1 to be
programmed by BIOS") enabled atomic sequence handling but because both
preopcodes are programmed, the following happens:

  if (preop >> 8)
  	val |= SSFSTS_CTL_SPOP;

Since on these systems preop >> 8 == 0x50 we end up picking volatile
write enable instead. Because of this the actual write command is pretty
much NOP unless there is a WREN latched in the chip already.

Furthermore we should not really just assume that WREN was issued in
previous call to intel_spi_write_reg() because that might not be the
case.

This updates driver to first check that the opcode is actually available
in PREOP_OPTYPE register and if not return error back to the spi-nor
core (if the controller is not locked we program it now). In addition we
save the opcode to ispi->atomic_preopcode field which is checked in next
call to intel_spi_sw_cycle() to actually enable atomic sequence using
the requested preopcode.

Fixes: 8c473dd61b ("spi-nor: intel-spi: Don't assume OPMENU0/1 to be programmed by BIOS")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-18 12:53:05 +02:00
Christoph Hellwig
3f3942aca6 proc: introduce proc_create_single{,_data}
Variants of proc_create{,_data} that directly take a seq_file show
callback and drastically reduces the boilerplate code in the callers.

All trivial callers converted over.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-05-16 07:23:35 +02:00
Boris Brezillon
782d1967d0 mtd: rawnand: Do not check FAIL bit when executing a SET_FEATURES op
The ONFI spec clearly says that FAIL bit is only valid for PROGRAM,
ERASE and READ-with-on-die-ECC operations, and should be ignored
otherwise.

It seems that checking it after sending a SET_FEATURES is a bad idea
because a previous READ, PROGRAM or ERASE op may have failed, and
depending on the implementation, the FAIL bit is not cleared until a
new READ, PROGRAM or ERASE is started.

This leads to ->set_features() returning -EIO while it actually worked,
which can sometimes stop a batch of READ/PROGRAM ops.

Note that we only fix the ->exec_op() path here, because some drivers
are abusing the NAND_STATUS_FAIL flag in their ->waitfunc()
implementation to propagate other kind of errors, like
wait-ready-timeout or controller-related errors. Let's not try to fix
those drivers since they worked fine so far.

Fixes: 8878b126df ("mtd: nand: add ->exec_op() implementation")
Cc: stable@vger.kernel.org
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-05-15 22:58:07 +02:00
Boris Brezillon
90d6176333 mtd: rawnand: marvell: Fix read logic for layouts with ->nchunks > 2
The code is doing monolithic reads for all chunks except the last one
which is wrong since a monolithic read will issue the
READ0+ADDRS+READ_START sequence. It not only takes longer because it
forces the NAND chip to reload the page content into its internal
cache, but by doing that we also reset the column pointer to 0, which
means we'll always read the first chunk instead of moving to the next
one.

Rework the code to do a monolithic read only for the first chunk,
then switch to naked reads for all intermediate chunks and finally
issue a last naked read for the last chunk.

Fixes: 02f26ecf8c mtd: nand: add reworked Marvell NAND controller driver
Cc: stable@vger.kernel.org
Reported-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-05-14 14:46:20 +02:00
Wan, Jane (Nokia - US/Sunnyvale)
39138c1f4a mtd: rawnand: use bit-wise majority to recover the ONFI param page
Per ONFI specification (Rev. 4.0), if all parameter pages have invalid
CRC values, the bit-wise majority may be used to recover the contents
of the parameter page from the parameter page copies present.

Signed-off-by: Jane Wan <Jane.Wan@nokia.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-13 09:50:16 +02:00
Tokunori Ikegami
ea092fb3ce mtd: cfi_cmdset_0002: Fix coding style issues
This patch fixes mainly to remove unneeded spaces after '(' and before ')'.
Also some indentation errors are fixed.

Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-12 09:53:50 +02:00
Rafał Miłecki
237ea0d476 mtd: bcm47xxpart: improve handling TRX partition size
When bcm47xxpart finds a TRX partition (container) it's supposed to jump
to the end of it and keep looking for more partitions. TRX and its
subpartitions are handled by a separate parser.

The problem with old code was relying on the length specified in a TRX
header. That isn't reliable as TRX is commonly modified to have checksum
cover only non-changing subpartitions. Otherwise modifying e.g. a rootfs
would result in CRC32 mismatch and bootloader refusing to boot a
firmware.

Fix it by trying better to figure out a real TRX size. We can securely
assume that TRX has to cover all subpartitions and the last one is at
least of a block size in size. Then compare it with a length field.

This makes code more optimal & reliable thanks to skipping data that
shouldn't be parsed.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
2018-05-12 09:42:38 +02:00
Christoph Hellwig
34ab96e6c5 mtd_blkdevs: handle highmem pages
Just kmap the single payload page before passing it on to the FTL.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-11 15:07:58 -06:00
Boris Brezillon
4120f8d158
mtd: spi-nor: Use the spi_mem_xx() API
The spi_mem_xxx() API has been introduced to replace the
spi_flash_read() one. Make use of it so we can get rid of
spi_flash_read().

Note that using spi_mem_xx() also simplifies the code because this API
takes care of using the regular spi_sync() interface when the optimized
->mem_ops interface is not implemented by the controller.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@exceet.de>
Tested-by: Frieder Schrempf <frieder.schrempf@exceet.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2018-05-11 11:33:51 +09:00
Boris Brezillon
3057fcef38 mtd: rawnand: Make sure we wait tWB before polling the STATUS reg
NAND chips require a bit of time to take the NAND operation into
account and set the BUSY bit in the STATUS reg. Make sure we don't poll
the STATUS reg too early in nand_soft_waitrdy().

Fixes: 8878b126df ("mtd: nand: add ->exec_op() implementation")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
2018-05-10 08:40:39 +02:00