Dmitry Torokhov 7c0bb53d48 i2c: core: Disable client irq on reboot/shutdown ... [ Upstream commit b64210f2f7 ] If an i2c client receives an interrupt during reboot or shutdown it may be too late to service it by making an i2c transaction on the bus because the i2c controller has already been shutdown. This can lead to system hangs if the i2c controller tries to make a transfer that is doomed to fail because the access to the i2c pins is already shut down, or an iommu translation has been torn down so i2c controller register access doesn't work. Let's simply disable the irq if there isn't a shutdown callback for an i2c client when there is an irq associated with the device. This will make sure that irqs don't come in later than the time that we can handle it. We don't do this if the i2c client device already has a shutdown callback because presumably they're doing the right thing and quieting the device so irqs don't come in after the shutdown callback returns. Reported-by: kernel test robot <lkp@intel.com> [swboyd@chromium.org: Dropped newline, added commit text, added interrupt.h for robot build error] Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-07-20 16:16:10 +02:00
..
algos	i2c: algo: pca: Reapply i2c bus settings after reset	2020-09-23 12:10:59 +02:00
busses	i2c: robotfuzz-osif: fix control-request directions	2021-06-30 08:48:34 -04:00
muxes	i2c: mux: demux-pinctrl: Fix an error handling path in 'i2c_demux_pinctrl_probe()'	2020-05-27 17:37:30 +02:00
i2c-boardinfo.c
i2c-core-acpi.c	i2c: core: Restore acpi_walk_dep_device_list() getting called after registering the ACPI i2c devs	2020-10-30 10:38:26 +01:00
i2c-core-base.c	i2c: core: Disable client irq on reboot/shutdown	2021-07-20 16:16:10 +02:00
i2c-core-of.c	i2c: core: fix use after free in of_i2c_notify	2019-12-13 08:51:07 +01:00
i2c-core-slave.c	i2c: slave: add sanity check when unregistering	2020-08-11 15:32:33 +02:00
i2c-core-smbus.c	i2c: core: check returned size of emulated smbus block read	2020-06-30 23:17:13 -04:00
i2c-core.h
i2c-dev.c	i2c: bail out early when RDWR parameters are wrong	2021-05-22 10:59:40 +02:00
i2c-mux.c	Merge branch 'i2c/for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2018-08-21 17:40:46 -07:00
i2c-slave-eeprom.c
i2c-smbus.c
i2c-stub.c
Kconfig
Makefile	i2c: don't use any __deprecated handling anymore	2018-08-24 17:26:43 +02:00