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gpio: mxc: Unlock on error path in mxc_flip_edge()
[ Upstream commit 3787035 ] We recently added locking to this function but one error path was over looked. Drop the lock before returning. Fixes: e546427 ("gpio: mxc: Protect GPIO irqchip RMW with bgpio spinlock") Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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