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media: tda1004x: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)
authorPeter Rosin <peda@axentia.se>
Wed, 20 Jun 2018 05:18:00 +0000 (07:18 +0200)
committerWolfram Sang <wsa@the-dreams.de>
Thu, 12 Jul 2018 22:09:28 +0000 (00:09 +0200)
commit3e985b3dba460df87e679337a833522145556382
tree379da81aafbf33b5b551ba85d744ca1f9731447atree | snapshot
parentdfecde407623b19cb9d57ebfa5abbca9741d96cbcommit | diff
media: tda1004x: 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/tda1004x.c diff | blob | history
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