Wolfram Sang b288daf8e1 i2c: rcar: check bus state before reinitializing ...

[ Upstream commit 0b57436f15 ]

We should check the bus state before reinitializing the IP core.
Otherwise, the internal bus busy state which also tracks multi-master
activity is lost.

Credits go to the Renesas BSP team for suggesting this change.

Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Fixes: ae481cc139 ("i2c: rcar: fix resume by always initializing registers before transfer")
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2018-12-21 14:15:12 +01:00

..

algos

i2c: algos: bit: make the error messages grepable

2018-08-30 23:11:42 +02:00

busses

i2c: rcar: check bus state before reinitializing

2018-12-21 14:15:12 +01:00

muxes

Merge branch 'i2c-mux/for-next' of https://github.com/peda-r/i2c-mux into i2c/for-4.19

2018-08-04 23:05:11 +02:00

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: Fix kerneldoc for renamed i2c dma put function

2018-10-11 22:59:57 +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: Drop owner assignment from i2c_driver

2015-08-10 08:37:35 +02:00

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

Merge branch 'i2c/for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

2016-12-15 12:56:35 -08:00

Makefile

i2c: don't use any __deprecated handling anymore

2018-08-24 17:26:43 +02:00