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mfd: 88pm860x-i2c: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)
authorPeter Rosin <peda@axentia.se>
Wed, 20 Jun 2018 05:18:02 +0000 (07:18 +0200)
committerWolfram Sang <wsa@the-dreams.de>
Thu, 12 Jul 2018 22:09:36 +0000 (00:09 +0200)
commit8c8f74f327a76604a499fad8c54c15e1c0ee8051
tree146082cdd422d2effe9714514170e520d6324933tree | snapshot
parent581733e619ad66908e02351f8a412d04149a2e90commit | diff
mfd: 88pm860x-i2c: 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: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
drivers/mfd/88pm860x-i2c.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git