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f1fdcbbdf4
linux/drivers/i2c
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Masahiro Yamada f1fdcbbdf4 i2c: uniphier-f: make driver robust against concurrency 
This is unlikely to happen, but it is possible for a CPU to enter
the interrupt handler just after wait_for_completion_timeout() has
expired. If this happens, the hardware is accessed from multiple
contexts concurrently.

Disable the IRQ after wait_for_completion_timeout(), and do nothing
from the handler when the IRQ is disabled.

Fixes: 6a62974b66 ("i2c: uniphier_f: add UniPhier FIFO-builtin I2C driver")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-10-29 18:53:37 +00:00
..
algos i2c: algos: bit: make the error messages grepable 2018-08-30 23:11:42 +02:00
busses i2c: uniphier-f: make driver robust against concurrency 2018-10-29 18:53:37 +00:00
muxes Merge branch 'i2c-mux/for-next' of https://github.com/peda-r/i2c-mux into i2c/for-4.20-fixed 2018-10-29 18:52:46 +00:00
i2c-boardinfo.c i2c: i2c-boardinfo: fix memory leaks on devinfo 2017-11-27 19:14:29 +01:00
i2c-core-acpi.c i2c: core: ACPI: Make acpi_gsb_i2c_read_bytes() check i2c_transfer return value 2018-08-20 14:09:26 +02:00
i2c-core-base.c i2c: core: remove level of indentation in i2c_transfer 2018-10-05 18:13:37 +02:00
i2c-core-of.c i2c: Export of_i2c_get_board_info() 2018-05-22 13:42:16 +02:00
i2c-core-slave.c i2c: remove i2c_lock_adapter and use i2c_lock_bus directly 2018-07-13 00:09:37 +02:00
i2c-core-smbus.c i2c: smbus: add unlocked __i2c_smbus_xfer variant 2018-07-20 23:51:37 +02:00
i2c-core.h i2c: make i2c_check_addr_validity() static 2018-03-24 14:07:23 +01:00
i2c-dev.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
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: i2c-smbus: add of_i2c_setup_smbus_alert 2017-10-28 23:42:47 +02:00
i2c-stub.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
Kconfig
Makefile i2c: don't use any __deprecated handling anymore 2018-08-24 17:26:43 +02:00