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i2c: recovery: require either get_sda or set_sda
authorWolfram Sang <wsa+renesas@sang-engineering.com>
Tue, 10 Jul 2018 21:42:16 +0000 (23:42 +0200)
committerWolfram Sang <wsa@the-dreams.de>
Tue, 17 Jul 2018 08:41:55 +0000 (10:41 +0200)
commit4437a8220bdb540c7289f66f9f57d4191bf43eaf
tree9dc18ae36f5b5d1ad5e8b9195d2b7e5ef181307ctree | snapshot
parent51a14bfaa6309abecba4b5ac90a8bef4317c7843commit | diff
i2c: recovery: require either get_sda or set_sda

For bus recovery, we either need to bail out early if we can read SDA or
we need to send STOP after every pulse. Otherwise recovery might be
misinterpreted as an unwanted write. So, require one of those SDA
handling functions to avoid this problem.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
drivers/i2c/i2c-core-base.c diff | blob | history
include/linux/i2c.h diff | blob | history
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