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gpio: zynq: protect direction in/out with a spinlock
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>
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Glenn Langedock
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Michal Simek
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Apr 23, 2018
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