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media: drxk_hard: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)
authorPeter Rosin <peda@axentia.se>
Wed, 20 Jun 2018 05:17:58 +0000 (07:17 +0200)
committerWolfram Sang <wsa@the-dreams.de>
Thu, 12 Jul 2018 22:09:21 +0000 (00:09 +0200)
commitc060a9fe07426dc030c9481493ad59b6459d7c46
tree97200aacc3c9a6809fc15dafe5b469d48eda2730tree | snapshot
parentb1e1ca27570016e3aa0e3265df699fea87013abccommit | diff
media: drxk_hard: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)

Locking the root adapter for __i2c_transfer will deadlock if the
device sits behind a mux-locked I2C mux. Switch to the finer-grained
i2c_lock_bus with the I2C_LOCK_SEGMENT flag. If the device does not
sit behind a mux-locked mux, the two locking variants are equivalent.

Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
drivers/media/dvb-frontends/drxk_hard.c diff | blob | history
Domain: System / Kernel;