Commit Graph

87788 Commits

Author SHA1 Message Date
Linus Walleij
85649711a8 ARM: gemini: delete <mach/gpio.h>
The Gemini has no need of a <mach/gpio.h> header as this is only
used by the machine-local gpio.c gpiochip driver, which is also
only using the irq_to_gpio() macro. Delete the file, move the single
macro into the driver and remove the NEED_MACH_GPIO_H flag.

Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-01 10:49:39 +02:00
Linus Walleij
a72be8b89e ARM: w90x900: delete <mach/gpio.h>
The local <mach/gpio.h> file on the w90x900 is completely unused
and the platform does not define NEED_MACH_GPIO_H.

Cc: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-01 10:33:02 +02:00
Linus Walleij
060c83fa0e Merge branch 'ixp4-cleanup' into devel 2013-09-27 14:46:56 +02:00
Linus Walleij
098e30f655 ARM: ixp4xx: stop broadcasting the custom GPIO API
Now that these custom GPIO accessors are only used from the
gpio chip in this machine, move the code out of the include
file and right next to the gpiochip implementation.

Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-27 14:15:44 +02:00
Linus Walleij
81ded3c11e ARM: ixp4: delete irq_to_gpio
This dangerous function is not used in the kernel, so let's
just delete it.

Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-27 14:15:39 +02:00
Linus Walleij
8040dd09c2 ARM: ixp4xx: convert remaining users to use gpiolib
A few call sites inside mach-ixp4xx were still using the custom
ixp4xx GPIO API with gpio_line_* accessors, convert all these
to use the standard gpiolib functions instead. Also attempt to
request and label all GPIOs before use. Move the GPIO requests
to per-machine device_initcalls() so we are not dependent on the
GPIO chip to be available at machine_init time.

Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-27 14:15:07 +02:00
Linus Walleij
44d94e8de5 Merge branch 'pxa-cleanup' into devel 2013-09-27 14:01:35 +02:00
Linus Walleij
88f718e3fa ARM: pxa: delete the custom GPIO header
The PXA sub-architecture appears to have a custom <mach/gpio.h>
for no reason whatsoever. The file became completely empty
after Haojian removed the remaining content in
commit 157d2644cb
"ARM: pxa: change gpio to platform device".

That commit added these two lines:

However it seems like deleting the file has no effect
whatsoever on the kernel compilation.

Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-27 14:01:09 +02:00
Linus Walleij
ffde39ea61 ARM: mmp: delete the custom GPIO header
The MMP sub-architecture appears to have a custom <mach/gpio.h>
for no reason whatsoever. The file became completely empty
after Haojian removed the remaining content in
commit 157d2644cb
"ARM: pxa: change gpio to platform device".

Cc: Eric Miao <eric.y.miao@gmail.com>
Acked-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-27 14:00:56 +02:00
Linus Walleij
e34ca9de0b ARM: plat-iop: pass physical base for GPIO
This alters the IOP platforms to pass a physical base for their
GPIO blocks and alters the driver to remap it when probing
instead of relying on the virtual addresses to be used.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20 23:05:19 +02:00
Linus Walleij
7b85b867b9 ARM: plat-iop: instantiate GPIO from platform device
This converts the IOP32x and IOP33x platforms to pass their
base address offset by a resource attached to a platform device
instead of using static offset macros implicitly passed
through <linux/gpio.h> including <mach/gpio.h>. Delete the
local <mach/gpio.h> and <asm/hardware/iop3xx-gpio.h> headers
and remove the selection of NEED_MACH_GPIO_H.

Pass the virtual address as a resource in the platform device
at this point for bisectability, next patch will pass the
physical address as is custom.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20 23:04:50 +02:00
Linus Walleij
51a97d829e ARM: plat-iop: remove custom complex GPIO implementation
The kernel will now only use gpiolib to access GPIOs, so remove
the complex GPIO flag and the custom implementation.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20 23:04:41 +02:00
Linus Walleij
afc3b79f5d ARM: iop32x: read N2100 power key using gpiolib
Refrain from using the custom gpio_line_get() to read the power
key on the N2100, use the gpiolib function gpio_get() instead.
Also request the line in the GPIOs initicall, and move the poll
timer setup to that inicall so the gpio chip is available before
we request this GPIO and start to poll it.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20 23:04:13 +02:00
Linus Walleij
7111f8780f ARM: iop32x: request and issue reset using gpio
As the IOP GPIO driver supports gpiolib we can use the standard
GPIO calls to issue a reset of the machine instead of using the
custom gpio_line_set/config calls. Also request the GPIO when
initializing the machine.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20 23:03:57 +02:00
Linus Walleij
e9004f5039 ARM: plat-iop: move the GPIO driver to drivers/gpio
Move the IOP GPIO driver to live with its siblings in the
GPIO subsystem.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20 23:03:36 +02:00
Linus Torvalds
a4ae54f90e Merge branch 'timers/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer code update from Thomas Gleixner:
 - armada SoC clocksource overhaul with a trivial merge conflict
 - Minor improvements to various SoC clocksource drivers

* 'timers/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: armada-370-xp: Add detailed clock requirements in devicetree binding
  clocksource: armada-370-xp: Get reference fixed-clock by name
  clocksource: armada-370-xp: Replace WARN_ON with BUG_ON
  clocksource: armada-370-xp: Fix device-tree binding
  clocksource: armada-370-xp: Introduce new compatibles
  clocksource: armada-370-xp: Use CLOCKSOURCE_OF_DECLARE
  clocksource: armada-370-xp: Simplify TIMER_CTRL register access
  clocksource: armada-370-xp: Use BIT()
  ARM: timer-sp: Set dynamic irq affinity
  ARM: nomadik: add dynamic irq flag to the timer
  clocksource: sh_cmt: 32-bit control register support
  clocksource: em_sti: Convert to devm_* managed helpers
2013-09-16 16:10:26 -04:00
Linus Torvalds
d8efd82eec Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "These are four patches for three construction sites:

   - Fix register decoding for the combination of multi-core processors
     and multi-threading.

   - Two more fixes that are part of the ongoing DECstation resurrection
     work.  One of these touches a DECstation-only network driver.

   - Finally Markos' trivial build fix for the AP/SP support.

  (With this applied now all MIPS defconfigs are building again)"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: kernel: vpe: Make vpe_attrs an array of pointers.
  MIPS: Fix SMP core calculations when using MT support.
  MIPS: DECstation I/O ASIC DMA interrupt handling fix
  MIPS: DECstation HRT initialization rearrangement
2013-09-15 17:45:52 -04:00
Linus Torvalds
6700215140 Xtensa patchset for v3.12
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJSMiG+AAoJEI9vqH3mFV2sLDwP/04Zt2Wvurdwd3tAW2fgJ3c/
 RJ2nQwt1w/YhMVUz/52QOtFiOrYF8fldpS3+51FphRiBPZa9oWPafCGWLotMnnfB
 myVeJ9xArscVpzLCAMONaBazE39/HoHGHtsRSjn8WGymbDByIH8PDwA6zSX9zPTu
 HuwdAH+x40wEEN6zFxQJyS4tdnHszOrJfHozwYZkSuXApHUkfBxxRQ5teV5u7ozF
 PSRfuNjiKs9BfDobhU7olIGx+ccUspYY695B9i+ChTNkgVZDSz+HKymYAzCMuPUr
 z++1qJCp5jR08/48X2UMwevpZr9NuR7Xf1hFGZ/tplCx0DBaTYi4sotviKPINp8R
 GuVH7SMkVdR4SdarigfoRpKSB/RZ7PvyfAP5bFfFTc8gQR8R8VLLQDp+9D2j2aeU
 BKxUVFGgXj65hEQaiTJrXXNrSciGE7I64CBGgmmvOGjo5pD8m9hcRaD2HhHontdr
 N/aM6ryRxadssoFoeo3KXVhnm0X7AxuIjYWexnc7BR3w7lG2VA6hh0DSuI5B1h05
 E/oWIsZWLseSojCuPIpPTpgFidx5lG4KYBA/irz5wi2bsFwVkVzGTNFzKe4Vaki2
 R4FxBVan7NuxEcS2gjBhkonPKlyCiTWLFGQcrzNY75sDIASmzpBQWjVe8J12Z+T7
 V3z8DwIcJuVdZcoyKRth
 =O8Zr
 -----END PGP SIGNATURE-----

Merge tag 'xtensa-next-20130912' of git://github.com/czankel/xtensa-linux

Pull Xtensa updates from Chris Zankel.

* tag 'xtensa-next-20130912' of git://github.com/czankel/xtensa-linux:
  xtensa: Fix broken allmodconfig build
  xtensa: remove CCOUNT_PER_JIFFY
  xtensa: fix !CONFIG_XTENSA_CALIBRATE_CCOUNT build failure
  xtensa: don't use echo -e needlessly
  xtensa: new fast_alloca handler
  xtensa: keep a3 and excsave1 on entry to exception handlers
  xtensa: enable kernel preemption
  xtensa: check thread flags atomically on return from user exception
2013-09-13 10:57:48 -07:00
Linus Torvalds
399a946edb Merge branch 'genirq' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull generic hardirq option removal from Martin Schwidefsky:
 "All architectures now use generic hardirqs, s390 has been last to
  switch.

  With that the code under !CONFIG_GENERIC_HARDIRQS and the related
  HAVE_GENERIC_HARDIRQS and GENERIC_HARDIRQS config options can be
  removed.  Yay!"

* 'genirq' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  Remove GENERIC_HARDIRQ config option
2013-09-13 07:31:38 -07:00
Linus Torvalds
951a730af4 blackfin updates for Linux 3.12
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJSMoABAAoJEJommM3PjknHeK0QAMCWvahMa3bHu1lPbvYoUKZ8
 lFYWye3RLpXQQgLcKTfVH/qoci1I4ssr5MmChZ88TmAZgojRlPk95rBu0pX08+dI
 6Ro6rfAYCd6LT06YFb1hOYzBkqmz2SCY1R+MKLPu2kzTC06lnd+iF2sEpBpyBSTq
 YyW42ZRgOcGf+/iqiBUo112ZbP2V00jQIeQNyvgwF7GKy+lx86SYxzsIukteSCgI
 W1pNNUnshXT9sH8tGLLtHEkAkYzSkL0mDLdpztkYKiVqXUaSZAz2jfz6CDqfTiNj
 i+wqTG02NN8lMSH8no8Eko9svzuGAmQVYQiSCL2y0Xesy4P2HW2B5uzVD0oKQXp3
 dKAmzUlhoSakAcq/6Rf11HYNYfeCN0T1VqnDt4U/OrIIq/WbK0qPsRtawYw0A5tZ
 4uOCZqxfcUW4y0y6TXBRToFb4Fa0vmGX3WGi6DnW6wU1PaEnW14tkqqvCOA9EUHr
 SZePAkPldRqLxCaJkhqS5eh6SlkObO81Nxtq7D0a1KkT6e2pYToq7QPKECitfs4U
 q5Q6PxKbxrLBRQRIYmU62dQYGsMinwaqjkOsyU0+e89iA4NGu+vq/SVRgYWiSxWF
 BHFW+OBZdYvhyTVYRF5ruSPdMxR6uUVSgMwYPYUUKaXgJ8qV9zaRhrFtdsYmweVc
 AVH7Iay5w9WSO7WghTTS
 =Shbz
 -----END PGP SIGNATURE-----

Merge tag 'blackfin-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/realmz6/blackfin-linux

Pull blackfin updates from Steven Miao.

* tag 'blackfin-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/realmz6/blackfin-linux:
  blackfin: Ignore generated uImages
  blackfin: Add STMMAC platform data to enable dwmac1000 driver on BF60x.
  bf609: adv7343: add S-Video and Component output support
  bf609: add adv7343 video encoder support
  clock: add stmmac clock for ethernet driver
  blackfin: scb: Add SCB1 to SCB9 config options and data.
  blackfin: scb: Add system crossbar init code.
2013-09-13 07:23:49 -07:00
Markos Chandras
1b4676330a MIPS: kernel: vpe: Make vpe_attrs an array of pointers.
Commit 567b21e973
"mips: convert vpe_class to use dev_groups"

broke the build on MIPS since vpe_attrs should be an array
of 'struct device_attribute' pointers.

Fixes the following build problem:
arch/mips/kernel/vpe.c:1372:2: error: missing braces around initializer
[-Werror=missing-braces]
arch/mips/kernel/vpe.c:1372:2: error: (near initialization for 'vpe_attrs[0]')
[-Werror=missing-braces]

Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <blogic@openwrt.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5819/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-09-13 15:12:48 +02:00
Martin Schwidefsky
0244ad004a Remove GENERIC_HARDIRQ config option
After the last architecture switched to generic hard irqs the config
options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code
for !CONFIG_GENERIC_HARDIRQS can be removed.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-09-13 15:09:52 +02:00
Leonid Yegoshin
670bac3a8c MIPS: Fix SMP core calculations when using MT support.
The TCBIND register is only available if the core has MT support. It
should not be read otherwise. Secondly, the number of TCs (siblings)
are calculated differently depending on if the kernel is configured
as SMVP or SMTC.

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5822/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-09-13 11:59:51 +02:00
Maciej W. Rozycki
5359b938c0 MIPS: DECstation I/O ASIC DMA interrupt handling fix
This change complements commit d0da7c002f7b2a93582187a9e3f73891a01d8ee4
and brings clear_ioasic_irq back, renaming it to clear_ioasic_dma_irq at
the same time, to make I/O ASIC DMA interrupts functional.

Unlike ordinary I/O ASIC interrupts DMA interrupts need to be deasserted
by software by writing 0 to the respective bit in I/O ASIC's System
Interrupt Register (SIR), similarly to how CP0.Cause.IP0 and CP0.Cause.IP1
bits are handled in the CPU (the difference is SIR DMA interrupt bits are
R/W0C so there's no need for an RMW cycle).  Otherwise the handler is
reentered over and over again.

The only current user is the DEC LANCE Ethernet driver and its extremely
uncommon DMA memory error handler that does not care when exactly the
interrupt is cleared.  Anticipating the use of DMA interrupts by the Zilog
SCC driver this change however exports clear_ioasic_dma_irq for device
drivers to choose the right application-specific sequence to clear the
request explicitly rather than calling it implicitly in the .irq_eoi
handler of `struct irq_chip'.  Previously these interrupts were cleared in
the .end handler of the said structure, before it was removed.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5826/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-09-13 11:57:40 +02:00
Maciej W. Rozycki
daed1285c3 MIPS: DECstation HRT initialization rearrangement
Not all I/O ASIC versions have the free-running counter implemented, an
early revision used in the 5000/1xx models aka 3MIN and 4MIN did not have
it.  Therefore we cannot unconditionally use it as a clock source.
Fortunately if not implemented its register slot has a fixed value so it
is enough if we check for the value at the end of the calibration period
being the same as at the beginning.

This also means we need to look for another high-precision clock source on
the systems affected.  The 5000/1xx can have an R4000SC processor
installed where the CP0 Count register can be used as a clock source.
Unfortunately all the R4k DECstations suffer from the missed timer
interrupt on CP0 Count reads erratum, so we cannot use the CP0 timer as a
clock source and a clock event both at a time.  However we never need an
R4k clock event device because all DECstations have a DS1287A RTC chip
whose periodic interrupt can be used as a clock source.

This gives us the following four configuration possibilities for I/O ASIC
DECstations:

1. No I/O ASIC counter and no CP0 timer, e.g. R3k 5000/1xx (3MIN).

2. No I/O ASIC counter but the CP0 timer, i.e. R4k 5000/150 (4MIN).

3. The I/O ASIC counter but no CP0 timer, e.g. R3k 5000/240 (3MAX+).

4. The I/O ASIC counter and the CP0 timer, e.g. R4k 5000/260 (4MAX+).

For #1 and #2 this change stops the I/O ASIC free-running counter from
being installed as a clock source of a 0Hz frequency.  For #2 it also
arranges for the CP0 timer to be used as a clock source rather than a
clock event device, because having an accurate wall clock is more
important than a high-precision interval timer.  For #3 there is no
change.  For #4 the change makes the I/O ASIC free-running counter
installed as a clock source so that the CP0 timer can be used as a clock
event device.

Unfortunately the use of the CP0 timer as a clock event device relies on a
succesful completion of c0_compare_interrupt.  That never happens, because
while waiting for a CP0 Compare interrupt to happen the function spins in
a loop reading the CP0 Count register.  This makes the CP0 Count erratum
trigger reliably causing the interrupt waited for to be lost in all cases.
As a result #4 resorts to using the CP0 timer as a clock source as well,
just as #2.  However we want to keep this separate arrangement in case
(hope) c0_compare_interrupt is eventually rewritten such that it avoids
the erratum.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5825/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-09-13 11:56:13 +02:00
Mark Brown
08b67faa23 blackfin: Ignore generated uImages
We have the build infrastructure to generate uImages so we should ignore
the resulting generated files.

Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2013-09-13 10:42:39 +08:00
Sonic Zhang
1d899fd652 blackfin: Add STMMAC platform data to enable dwmac1000 driver on BF60x.
- Enable GMAC
- Set propler DMA PBL
- Disable DMA store and forward mode
- Select PTP input clock from MII
clock.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2013-09-13 10:42:38 +08:00
Scott Jiang
e57860929c bf609: adv7343: add S-Video and Component output support
Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
2013-09-13 10:42:36 +08:00
Scott Jiang
4940c53d26 bf609: add adv7343 video encoder support
Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
2013-09-13 10:42:34 +08:00
Steven Miao
3036dccf2c clock: add stmmac clock for ethernet driver
Signed-off-by: Steven Miao <realmz6@gmail.com>
2013-09-13 10:42:32 +08:00
Sonic Zhang
206f060c21 blackfin: scb: Add SCB1 to SCB9 config options and data.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2013-09-13 10:42:31 +08:00
Steven Miao
24a70cf2b2 blackfin: scb: Add system crossbar init code.
If SCB exists in select blackfin cpu, developer can change the SCB
priority in kernel configuration.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2013-09-13 10:42:27 +08:00
Linus Torvalds
5a7d8a2808 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "This has been sitting in -next for a while with no objections and all
  MIPS defconfigs except one are building fine; that one platform got
  broken by another patch in your tree and I'm going to submit a patch
  separately.

   - a handful of fixes that didn't make 3.11
   - a few bits of Octeon 3 support with more to come for a later
     release
   - platform enhancements for Octeon, ath79, Lantiq, Netlogic and
     Ralink SOCs
   - a GPIO driver for the Octeon
   - some dusting off of the DECstation code
   - the usual dose of cleanups"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (65 commits)
  MIPS: DMA: Fix BUG due to smp_processor_id() in preemptible code
  MIPS: kexec: Fix random crashes while loading crashkernel
  MIPS: kdump: Skip walking indirection page for crashkernels
  MIPS: DECstation HRT calibration bug fixes
  MIPS: Export copy_from_user_page() (needed by lustre)
  MIPS: Add driver for the built-in PCI controller of the RT3883 SoC
  MIPS: DMA: For BMIPS5000 cores flush region just like non-coherent R10000
  MIPS: ralink: Add support for reset-controller API
  MIPS: ralink: mt7620: Add cpu-feature-override header
  MIPS: ralink: mt7620: Add spi clock definition
  MIPS: ralink: mt7620: Add wdt clock definition
  MIPS: ralink: mt7620: Improve clock frequency detection
  MIPS: ralink: mt7620: This SoC has EHCI and OHCI hosts
  MIPS: ralink: mt7620: Add verbose ram info
  MIPS: ralink: Probe clocksources from OF
  MIPS: ralink: Add support for systick timer found on newer ralink SoC
  MIPS: ralink: Add support for periodic timer irq
  MIPS: Netlogic: Built-in DTB for XLP2xx SoC boards
  MIPS: Netlogic: Add support for USB on XLP2xx
  MIPS: Netlogic: XLP2xx update for I2C controller
  ...
2013-09-12 16:14:49 -07:00
Linus Torvalds
ac4de9543a Merge branch 'akpm' (patches from Andrew Morton)
Merge more patches from Andrew Morton:
 "The rest of MM.  Plus one misc cleanup"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (35 commits)
  mm/Kconfig: add MMU dependency for MIGRATION.
  kernel: replace strict_strto*() with kstrto*()
  mm, thp: count thp_fault_fallback anytime thp fault fails
  thp: consolidate code between handle_mm_fault() and do_huge_pmd_anonymous_page()
  thp: do_huge_pmd_anonymous_page() cleanup
  thp: move maybe_pmd_mkwrite() out of mk_huge_pmd()
  mm: cleanup add_to_page_cache_locked()
  thp: account anon transparent huge pages into NR_ANON_PAGES
  truncate: drop 'oldsize' truncate_pagecache() parameter
  mm: make lru_add_drain_all() selective
  memcg: document cgroup dirty/writeback memory statistics
  memcg: add per cgroup writeback pages accounting
  memcg: check for proper lock held in mem_cgroup_update_page_stat
  memcg: remove MEMCG_NR_FILE_MAPPED
  memcg: reduce function dereference
  memcg: avoid overflow caused by PAGE_ALIGN
  memcg: rename RESOURCE_MAX to RES_COUNTER_MAX
  memcg: correct RESOURCE_MAX to ULLONG_MAX
  mm: memcg: do not trap chargers with full callstack on OOM
  mm: memcg: rework and document OOM waiting and wakeup
  ...
2013-09-12 15:44:27 -07:00
Johannes Weiner
3a13c4d761 x86: finish user fault error path with fatal signal
The x86 fault handler bails in the middle of error handling when the
task has a fatal signal pending.  For a subsequent patch this is a
problem in OOM situations because it relies on pagefault_out_of_memory()
being called even when the task has been killed, to perform proper
per-task OOM state unwinding.

Shortcutting the fault like this is a rather minor optimization that
saves a few instructions in rare cases.  Just remove it for
user-triggered faults.

Use the opportunity to split the fault retry handling from actual fault
errors and add locking documentation that reads suprisingly similar to
ARM's.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: azurIt <azurit@pobox.sk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-12 15:38:01 -07:00
Johannes Weiner
759496ba64 arch: mm: pass userspace fault flag to generic fault handler
Unlike global OOM handling, memory cgroup code will invoke the OOM killer
in any OOM situation because it has no way of telling faults occuring in
kernel context - which could be handled more gracefully - from
user-triggered faults.

Pass a flag that identifies faults originating in user space from the
architecture-specific fault handlers to generic code so that memcg OOM
handling can be improved.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: azurIt <azurit@pobox.sk>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-12 15:38:01 -07:00
Johannes Weiner
871341023c arch: mm: do not invoke OOM killer on kernel fault OOM
Kernel faults are expected to handle OOM conditions gracefully (gup,
uaccess etc.), so they should never invoke the OOM killer.  Reserve this
for faults triggered in user context when it is the only option.

Most architectures already do this, fix up the remaining few.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: azurIt <azurit@pobox.sk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-12 15:38:01 -07:00
Johannes Weiner
94bce453c7 arch: mm: remove obsolete init OOM protection
The memcg code can trap tasks in the context of the failing allocation
until an OOM situation is resolved.  They can hold all kinds of locks
(fs, mm) at this point, which makes it prone to deadlocking.

This series converts memcg OOM handling into a two step process that is
started in the charge context, but any waiting is done after the fault
stack is fully unwound.

Patches 1-4 prepare architecture handlers to support the new memcg
requirements, but in doing so they also remove old cruft and unify
out-of-memory behavior across architectures.

Patch 5 disables the memcg OOM handling for syscalls, readahead, kernel
faults, because they can gracefully unwind the stack with -ENOMEM.  OOM
handling is restricted to user triggered faults that have no other
option.

Patch 6 reworks memcg's hierarchical OOM locking to make it a little
more obvious wth is going on in there: reduce locked regions, rename
locking functions, reorder and document.

Patch 7 implements the two-part OOM handling such that tasks are never
trapped with the full charge stack in an OOM situation.

This patch:

Back before smart OOM killing, when faulting tasks were killed directly on
allocation failures, the arch-specific fault handlers needed special
protection for the init process.

Now that all fault handlers call into the generic OOM killer (see commit
609838cfed: "mm: invoke oom-killer from remaining unconverted page
fault handlers"), which already provides init protection, the
arch-specific leftovers can be removed.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: azurIt <azurit@pobox.sk>
Acked-by: Vineet Gupta <vgupta@synopsys.com>	[arch/arc bits]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-12 15:38:01 -07:00
Linus Torvalds
26935fb06e Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pile 4 from Al Viro:
 "list_lru pile, mostly"

This came out of Andrew's pile, Al ended up doing the merge work so that
Andrew didn't have to.

Additionally, a few fixes.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (42 commits)
  super: fix for destroy lrus
  list_lru: dynamically adjust node arrays
  shrinker: Kill old ->shrink API.
  shrinker: convert remaining shrinkers to count/scan API
  staging/lustre/libcfs: cleanup linux-mem.h
  staging/lustre/ptlrpc: convert to new shrinker API
  staging/lustre/obdclass: convert lu_object shrinker to count/scan API
  staging/lustre/ldlm: convert to shrinkers to count/scan API
  hugepage: convert huge zero page shrinker to new shrinker API
  i915: bail out earlier when shrinker cannot acquire mutex
  drivers: convert shrinkers to new count/scan API
  fs: convert fs shrinkers to new scan/count API
  xfs: fix dquot isolation hang
  xfs-convert-dquot-cache-lru-to-list_lru-fix
  xfs: convert dquot cache lru to list_lru
  xfs: rework buffer dispose list tracking
  xfs-convert-buftarg-lru-to-generic-code-fix
  xfs: convert buftarg LRU to generic code
  fs: convert inode and dentry shrinking to be node aware
  vmscan: per-node deferred work
  ...
2013-09-12 15:01:38 -07:00
Linus Torvalds
3cc69b638e ARM: SoC fixes for 3.12
A small batch of fixes that have trickled in over the last week of the
 merge window.
 
 Also included are few small devicetree updates for sunxi, since it
 enables me to use one of their newer boards (cubieboard2) for additional
 test coverage. The support for that SoC is new for 3.12, so there's no
 exposure to new regressions due to it.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJSMhzcAAoJEIwa5zzehBx3Q/8P/AufAcFpBGAFxxu31S2Uplcu
 TKwUOqQcTlIFB6IEJ6fDnkhFYB/XFcak3V1IpN2OgVhhW/Z4GGxPYlRgWmq+zO2/
 RHpChiPOvbIjV911dSwGIjIomoWtBvZuYBa/EPZ2KFzEx+NtiG9bUNbS5C1HgYeE
 6pqMUb1wfAW7ijdTx/uKNFhVuOOHRqjFLaQ2IBnCJTCB6FVyVobsLLsdc+8ZBnZj
 xCgnjzriNUpP9MwNsllv8bh6B03ugrjJMYZZle7ADysFUV7Q+kZ/RN+13TiQABRK
 dXbDKBlXFFUCDrSfy0b3NR8z69TKFgx9cxeK4TBpBzRS5UQBUXstGKGKh3h0k11G
 pN65rUWlldMM/V3hKozFdvS89mM28Ofj7xT6ivXdJhtx6F+7NIyO18YGszlwqPqa
 6DyQBQQdqcfJAKZr6ZezHSZHN5x1sZZyLkC/4MVYWAUDOE2gq+2+GYU5DCchPeUK
 KQ5mt+zRwlSUCCwDkTa40xiesFLsmrda8KclnoXxR7twGB6acGpulS/hxQe4EFpL
 VrOWPhxKQDQKlz7l8wdnice6J4BgfC/CYkui96Szpe1Nl7I+LGpyD/8wxzwUr/OV
 L3zLRdOHzgrR75zXMKHJmFcg38geD5qeoL6RkeHK1rEOMDrQlzl9H1IKj2ff0/sk
 loA69alLYJA5RgSMgbDW
 =HLjK
 -----END PGP SIGNATURE-----

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

Pull ARM SoC fixes from Olof Johansson:
 "A small batch of fixes that have trickled in over the last week of the
  merge window.

  Also included are few small devicetree updates for sunxi, since it
  enables me to use one of their newer boards (cubieboard2) for
  additional test coverage.  The support for that SoC is new for 3.12,
  so there's no exposure to new regressions due to it"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: dts: sun7i: olinuxino-micro: Enable the EMAC
  ARM: dts: sun7i: cubieboard2: Enable the EMAC
  ARM: dts: sun7i: Add the muxing options for the EMAC
  ARM: dts: sun7i: Enable the Ethernet in the A20
  i2c: davinci: Fix bad dev_get_platdata() conversion
  ARM: vexpress: allow dcscb and tc2_pm in a combined ARMv6+v7 build
  ARM: shmobile: lager: Do not use register_type field of struct sh_eth_plat_data
  ARM: pxa: ssp: Check return values from phandle lookups
  ARM: PCI: versatile: Fix SMAP register offsets
  ARM: PCI: versatile: Fix PCI I/O
  ARM: PCI: versatile: Fix map_irq function to match hardware
  ARM: ep93xx: Don't use modem interface on the second UART
  ARM: shmobile: r8a7779: Update early timer initialisation order
2013-09-12 13:59:31 -07:00
Linus Torvalds
0e6a1fb116 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "Just two fixes here - one for the recent addition of Neon stuff which
  causes problems when this is built as a module.  The other was one
  spotted by Olof with the fixed-HZ stuff.

  Last patch (which is at the very top) is not a fix per-se, but an
  almost-end-of-merge window sorting of the select symbols in
  arch/arm/Kconfig to keep them as akpm would like to reduce unnecessary
  conflicts.  I've also taken the liberty this time to add a comment at
  the end to discourage the endless "add the next select to the bottom
  of a nicely sorted list" syndrome"

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: sort arch/arm/Kconfig
  ARM: fix forced-HZ values
  ARM: 7835/2: fix modular build of xor_blocks() with NEON enabled
2013-09-12 13:58:35 -07:00
Russell King
171b3f0da7 ARM: sort arch/arm/Kconfig
Keep arch/arm/Kconfig select statements sorted alphabetically.  I've
added a comment at the bottom of the main bank for CONFIG_ARM to this
effect so hopefully this will keep things more in order.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-09-12 21:24:42 +01:00
Maxime Ripard
f7ec00b3a5 ARM: dts: sun7i: olinuxino-micro: Enable the EMAC
The A20-olinuxino-micro has the EMAC wired in. Enable it in the DT so
that we can use it.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-12 12:22:48 -07:00
Maxime Ripard
0547433761 ARM: dts: sun7i: cubieboard2: Enable the EMAC
The Cubieboard2, just like its A10 counterpart, has the Ethernet wired
in. Enable it in the DT.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-12 12:22:43 -07:00
Maxime Ripard
756084c50c ARM: dts: sun7i: Add the muxing options for the EMAC
The A20 has several muxing options for the EMAC. Yet, the currently
supported boards only use one set of them. Add that pin set to the DTSI.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-12 12:22:39 -07:00
Maxime Ripard
2e804d03d2 ARM: dts: sun7i: Enable the Ethernet in the A20
The Allwinner A20 SoC also have the EMAC found on the A10 and A10s.
Enable the support for it in the DTSI.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-12 12:22:32 -07:00
Linus Torvalds
e5d0c87439 IOMMU Updates for Linux v3.12
This round the updates contain:
 
 	* A new driver for the Freescale PAMU IOMMU from Varun Sethi.
 	  This driver has cooked for a while and required changes to the
 	  IOMMU-API and infrastructure that were already merged before.
 	* Updates for the ARM-SMMU driver from Will Deacon
 	* Various fixes, the most important one is probably a fix from
 	  Alex Williamson for a memory leak in the VT-d page-table
 	  freeing code
 
 In summary not all that much. The biggest part in the diffstat is the
 new PAMU driver.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJSMdWFAAoJECvwRC2XARrjZbkP/3lYpEjd1SmqZAVUTPQw/H1Y
 9DHFs39WZddlz73YkF2yDyprjdi2b8wUzOJGr0BJ0AWb97l3bcvouqRaw0Q8Sghc
 sHYHHF/L/n6xkDVd8OXTGgQukjOu16yb1Ai1jlvlNgrB8T9lA0QKjSIDfVVJb99c
 qGnO58UqnxOC7zzL5iqDfkgffre+dw4Ik2BddN6+gdPV907wsk7ze5nTDNTMkXso
 oGi7jwbOTkuWyI6ST1GnkSV9bB1yUPR0Np0sFSOtGbsRSDOA4Ta96AHygZ3kPza+
 ErylGBlHj0KG7oH7m3GOQAso6MeNdHa+7aIewaLz2NKundhPA6Kb3hFdghjGGPzR
 ubJ3IiG7X/MPrp8iwNsPDoCaRkWWGR80L9vIlhD+yvfCx8PkkEUoEIbf1k4Gm0Ry
 5ouROU77Ha2P6ZuGvPCTlok4ggKkV2mHdUuetC/04ETvA3kN+2TGjya/1wL+X+H/
 fV3jyBRYWFaXNzKl3qKfol2ETG3hQA5NGNKuHMTJz8CF8jHSJeijDCeiWv363h62
 oQ+CrUG7FJ4B9ZITGDzxA0MdFs5TIqRRp2vY8onaok5YAR3U/iiKRRv+YjIjZuE4
 CTshhbb/mwwaTKvq8pq9xs/3rhGX+3HSP4jAzNWUJPYgouE+rvHq/H1ApI89IxJF
 1wYemwLPo3fMcgOvw8pm
 =UZoD
 -----END PGP SIGNATURE-----

Merge tag 'iommu-updates-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU Updates from Joerg Roedel:
 "This round the updates contain:

   - A new driver for the Freescale PAMU IOMMU from Varun Sethi.

     This driver has cooked for a while and required changes to the
     IOMMU-API and infrastructure that were already merged before.

   - Updates for the ARM-SMMU driver from Will Deacon

   - Various fixes, the most important one is probably a fix from Alex
     Williamson for a memory leak in the VT-d page-table freeing code

  In summary not all that much.  The biggest part in the diffstat is the
  new PAMU driver"

* tag 'iommu-updates-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  intel-iommu: Fix leaks in pagetable freeing
  iommu/amd: Fix resource leak in iommu_init_device()
  iommu/amd: Clean up unnecessary MSI/MSI-X capability find
  iommu/arm-smmu: Simplify VMID and ASID allocation
  iommu/arm-smmu: Don't use VMIDs for stage-1 translations
  iommu/arm-smmu: Tighten up global fault reporting
  iommu/arm-smmu: Remove broken big-endian check
  iommu/fsl: Remove unnecessary 'fsl-pamu' prefixes
  iommu/fsl: Fix whitespace problems noticed by git-am
  iommu/fsl: Freescale PAMU driver and iommu implementation.
  iommu/fsl: Add additional iommu attributes required by the PAMU driver.
  powerpc: Add iommu domain pointer to device archdata
  iommu/exynos: Remove dead code (set_prefbuf)
2013-09-12 11:29:26 -07:00
Linus Torvalds
75acebf242 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Various fixes.

  The -g perf report lockup you reported is only partially addressed,
  patches that fix the excessive runtime are still being worked on"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86: Fix uncore PCI fixed counter handling
  uprobes: Fix utask->depth accounting in handle_trampoline()
  perf/x86: Add constraint for IVB CYCLE_ACTIVITY:CYCLES_LDM_PENDING
  perf: Fix up MMAP2 buffer space reservation
  perf tools: Add attr->mmap2 support
  perf kvm: Fix sample_type manipulation
  perf evlist: Fix id pos in perf_evlist__open()
  perf trace: Handle perf.data files with no tracepoints
  perf session: Separate progress bar update when processing events
  perf trace: Check if MAP_32BIT is defined
  perf hists: Fix formatting of long symbol names
  perf evlist: Fix parsing with no sample_id_all bit set
  perf tools: Add test for parsing with no sample_id_all bit
  perf trace: Check control+C more often
2013-09-12 10:44:54 -07:00
Joerg Roedel
d6a60fc1a8 Merge branches 'arm/exynos', 'ppc/pamu', 'arm/smmu', 'x86/amd' and 'iommu/fixes' into next 2013-09-12 16:46:34 +02:00
Noam Camus
c3567f8a35 ARC: SMP failed to boot due to missing IVT setup
Commit 05b016ecf5 "ARC: Setup Vector Table Base in early boot" moved
the Interrupt vector Table setup out of arc_init_IRQ() which is called
for all CPUs, to entry point of boot cpu only, breaking booting of others.

Fix by adding the same to entry point of non-boot CPUs too.

read_arc_build_cfg_regs() printing IVT Base Register didn't help the
casue since it prints a synthetic value if zero which is totally bogus,
so fix that to print the exact Register.

[vgupta: Remove the now stale comment from header of arc_init_IRQ and
also added the commentary for halt-on-reset]

Cc: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: Cc: <stable@vger.kernel.org> #3.11
Signed-off-by: Noam Camus <noamc@ezchip.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-12 07:40:08 -07:00