AuxXxilium/linux_dsm_epyc7002
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57343d5161
linux_dsm_epyc7002/drivers/misc
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John Hubbard 57343d5161 misc: xilinx-sdfec: improve get_user_pages_fast() error handling 
This fixes the case of get_user_pages_fast() returning a -errno.
The result needs to be stored in a signed integer. And for safe
signed/unsigned comparisons, it's best to keep everything signed.
And get_user_pages_fast() also expects a signed value for number
of pages to pin.

Therefore, change most relevant variables, from u32 to int. Leave
"n" unsigned, for convenience in checking for overflow. And provide
a WARN_ON_ONCE() and early return, if overflow occurs.

Also, as long as we're tidying up: rename the page array from page,
to pages, in order to match the conventions used in most other call
sites.

Fixes: 20ec628e80 ("misc: xilinx_sdfec: Add ability to configure LDPC")
Cc: Derek Kiernan <derek.kiernan@xilinx.com>
Cc: Dragan Cvetic <dragan.cvetic@xilinx.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Link: https://lore.kernel.org/r/20200527012628.1100649-2-jhubbard@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-27 11:09:26 +02:00
..
altera-stapl altera-stapl: altera_get_note: prevent write beyond end of 'key' 2020-03-03 08:02:57 +01:00
c2port treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cardreader misc: rtsx: Remove unnecessary rts5249_set_aspm(), rts5260_set_aspm() 2020-05-22 09:38:14 +02:00
cb710 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cxl misc: cxl: use mmgrab 2020-01-16 14:59:36 +10:00
echo treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176 2019-05-30 11:29:19 -07:00
eeprom Linux 5.6-rc7 2020-03-26 12:09:58 +01:00
genwqe genwqe: convert get_user_pages() --> pin_user_pages() 2020-05-19 16:46:12 +02:00
habanalabs habanalabs: handle MMU cache invalidation timeout 2020-05-25 08:17:57 +03:00
ibmasm Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-07-19 10:42:02 -07:00
lis3lv02d lis3lv02d: switch to using input device polling mode 2019-10-10 15:24:19 +02:00
lkdtm lkdtm: bugs: Fix spelling mistake 2020-04-23 16:30:09 +02:00
mei mei: me: disable mei interface on LBG servers. 2020-05-05 16:56:41 +02:00
mic drivers/mic/scif: convert get_user_pages() --> pin_user_pages() 2020-05-19 16:46:12 +02:00
ocxl ocxl: Add PCI hotplug dependency to Kconfig 2020-01-23 21:31:18 +11:00
sgi-gru misc: Replace zero-length array with flexible-array member 2020-03-18 12:24:19 +01:00
sgi-xp sgi-xp: make some symbols static in xpc_main.c 2020-04-23 16:55:23 +02:00
ti-st drivers/misc: ti-st: remove redundant assignment to variables i and flags 2020-01-14 15:16:51 +01:00
uacce uacce: unmap remaining mmapping from user space 2020-03-06 12:28:24 +11:00
vmw_vmci VMCI: Avoid extra check for access_ok() 2020-05-15 16:25:21 +02:00
ad525x_dpot-i2c.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149 2019-05-30 11:25:18 -07:00
ad525x_dpot-spi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149 2019-05-30 11:25:18 -07:00
ad525x_dpot.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149 2019-05-30 11:25:18 -07:00
ad525x_dpot.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149 2019-05-30 11:25:18 -07:00
apds990x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336 2019-06-05 17:37:07 +02:00
apds9802als.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
atmel_tclib.c misc: atmel_tclib: use devm_platform_ioremap_resource() to simplify code 2019-10-10 15:24:19 +02:00
atmel-ssc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
bh1770glc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336 2019-06-05 17:37:07 +02:00
cs5535-mfgpt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
ds1682.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
dummy-irq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
enclosure.c scsi: enclosure: Fix stale device oops with hot replug 2020-01-10 01:38:40 -05:00
fastrpc.c misc: fastrpc: fix potential fastrpc_invoke_ctx leak 2020-05-15 16:21:08 +02:00
hmc6352.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
hpilo.c
hpilo.h misc: Use the correct style for SPDX License Identifier 2019-10-10 15:34:40 +02:00
ibmvmc.c
ibmvmc.h misc: Use the correct style for SPDX License Identifier 2019-10-10 15:34:40 +02:00
ics932s401.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
isl29003.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
isl29020.c misc: isl29020: add missed pm_runtime_disable 2020-01-14 15:06:07 +01:00
Kconfig uacce: add uacce driver 2020-02-22 09:25:42 +08:00
kgdbts.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
lattice-ecp3-config.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
Makefile uacce: add uacce driver 2020-02-22 09:25:42 +08:00
pch_phub.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
pci_endpoint_test.c misc: pci_endpoint_test: Add Device ID for RZ/G2E PCIe controller 2020-05-19 16:46:12 +02:00
phantom.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
pti.c Char/Misc driver changes for 5.6-rc1 2020-01-29 10:35:54 -08:00
pvpanic.c misc: pvpanic: add crash loaded event 2020-01-14 15:07:37 +01:00
qcom-coincell.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
sram-exec.c drivers/misc: sram-exec: have the callers of set_memory_*() check the return value 2020-01-14 15:06:06 +01:00
sram.c misc: sram: use devm_platform_ioremap_resource_wc() 2019-11-05 18:32:47 +01:00
sram.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
tifm_7xx1.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
tifm_core.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
tsl2550.c misc: tsl2550: remove redundant initialization to variable r 2020-01-14 15:16:51 +01:00
vexpress-syscfg.c misc: vexpress: Replace zero-length array with flexible-array member 2020-02-11 14:03:19 -08:00
vmw_balloon.c vmw_balloon: Explicitly include linux/io.h for virt_to_phys() 2019-12-10 10:15:48 +01:00
xilinx_sdfec.c misc: xilinx-sdfec: improve get_user_pages_fast() error handling 2020-05-27 11:09:26 +02:00