android_kernel_motorola_sm6375/drivers/misc
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Ian Munsie ee41d11d53 cxl: Change contexts_lock to a mutex to fix sleep while atomic bug
We had a known sleep while atomic bug if a CXL device was forcefully
unbound while it was in use. This could occur as a result of EEH, or
manually induced with something like this while the device was in use:

echo 0000:01:00.0 > /sys/bus/pci/drivers/cxl-pci/unbind

The issue was that in this code path we iterated over each context and
forcefully detached it with the contexts_lock spin lock held, however
the detach also needed to take the spu_mutex, and call schedule.

This patch changes the contexts_lock to a mutex so that we are not in
atomic context while doing the detach, thereby avoiding the sleep while
atomic.

Also delete the related TODO comment, which suggested an alternate
solution which turned out to not be workable.

Cc: stable@vger.kernel.org
Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-12-12 13:06:47 +11:00
..
altera-stapl altera-stapl: replace strnicmp with strncasecmp 2014-10-14 02:18:25 +02:00
c2port
carma Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-10-18 18:11:04 -07:00
cb710
cxl cxl: Change contexts_lock to a mutex to fix sleep while atomic bug 2014-12-12 13:06:47 +11:00
echo
eeprom EEPROM: Introduce the use of devm_kzalloc 2014-09-23 23:04:17 -07:00
fuse soc/tegra: Add efuse driver for Tegra 2014-07-17 14:36:01 +02:00
genwqe GenWQE: Support blocking when DDCB queue is busy 2014-09-23 23:15:47 -07:00
ibmasm
lis3lv02d
mei Char/Misc driver patches for 3.18-rc1 2014-10-08 06:55:41 -04:00
mic virtio: unify config_changed handling 2014-10-15 10:24:54 +10:30
sgi-gru Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next 2014-06-03 15:48:23 -07:00
sgi-xp net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
ti-st misc: st_core: Protect unsigned value against becoming negative 2014-09-23 23:14:28 -07:00
vmw_vmci PCI changes for the v3.18 merge window: 2014-10-09 15:03:49 -04:00
ad525x_dpot-i2c.c
ad525x_dpot-spi.c
ad525x_dpot.c
ad525x_dpot.h
apds990x.c
apds9802als.c
arm-charlcd.c misc: arm-charlcd: add DT probe support 2014-05-03 19:26:25 -04:00
atmel-ssc.c ASoC: atmel-ssc: distinguish whether SSC supports fslen ext 2014-06-21 11:37:32 +01:00
atmel_tclib.c ARM: at91/tclib: mask interruptions at shutdown and probe 2014-09-08 10:54:03 +02:00
bh1770glc.c misc: bh1770glc: Use managed functions 2014-07-22 16:28:11 -07:00
bh1780gli.c misc: bh1780: Introduce the use of devm_kzalloc 2014-07-27 11:10:42 -07:00
bmp085-i2c.c
bmp085-spi.c
bmp085.c
bmp085.h
cs5535-mfgpt.c
ds1682.c misc: (ds1682) replace obsolete simple_strtoull() with kstrtoull() 2014-05-03 19:26:24 -04:00
dummy-irq.c Add MODULE_DESCRIPTION to dummy-irq.c and lkdtm.c in drivers/misc 2014-07-09 14:19:34 -07:00
enclosure.c
fsa9480.c
hmc6352.c
hpilo.c
hpilo.h
ics932s401.c
ioc4.c misc: ioc4: Use ktime_get_ns() 2014-07-23 15:01:43 -07:00
isl29003.c
isl29020.c
Kconfig cxl: Add base builtin support 2014-10-08 20:15:56 +11:00
kgdbts.c
lattice-ecp3-config.c misc: lattice-ecp3-config: Add missing MODULE_FIRMWARE() 2014-09-23 23:04:17 -07:00
lkdtm.c Add MODULE_DESCRIPTION to dummy-irq.c and lkdtm.c in drivers/misc 2014-07-09 14:19:34 -07:00
Makefile cxl: Add base builtin support 2014-10-08 20:15:56 +11:00
pch_phub.c
phantom.c
pti.c
spear13xx_pcie_gadget.c pcie-gadget-spear: use devm_ functions 2014-09-23 23:04:17 -07:00
sram.c
ti_dac7512.c
tifm_7xx1.c
tifm_core.c
tsl2550.c
vexpress-syscfg.c misc: vexpress: Fix sparse non static symbol warnings 2014-07-22 16:28:11 -07:00
vmw_balloon.c MAINTAINERS: add entry for VMware Balloon driver 2014-06-20 11:47:33 -07:00