gpio: zynq: protect direction in/out with a spinlock

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Fix race condition when changing the direction (in/out) of the GPIO pin.
The read-modify-write sequence (as coded in the driver) isn't atomic and
requires synchronization (spinlock).

Signed-off-by: Glenn Langedock <Glenn.Langedock@barco.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

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Glenn Langedock 2020-06-17 17:07:21 +05:30 • committed by Bartosz Golaszewski

parent 8346b92ecd

commit fdcfec11b2

1 changed files with 11 additions and 0 deletions

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drivers/gpio/gpio-zynq.c

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