tree fa7ee0b8be619da9af438fd5c5da292a34c415c2
parent 57da414000905913c77a523013d28f32260c6b6c
author Peter Rosin <peda@axentia.se> 1529471876 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1537943799 +0200

input: rohm_bu21023: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)

[ Upstream commit 193c2a07cfaacb9249ab0e3d34bce32490879355 ]

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: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>