linux-kernel - [PATCH 04/14] m5mols: use atomic_dec_not

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Date:   Mon, 30 Jan 2017 19:54:37 +0100
From:   Fabian Frederick <fabf@...net.be>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, kyungmin.park@...sung.com,
        linux-media@...r.kernel.org, Fabian Frederick <fabf@...net.be>
Subject: [PATCH 04/14] m5mols: use atomic_dec_not_zero()

instead of atomic_add_unless(value, -1, 0)

Signed-off-by: Fabian Frederick <fabf@...net.be>
---
 drivers/media/i2c/m5mols/m5mols_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c
index acb804b..3aab2ca 100644
--- a/drivers/media/i2c/m5mols/m5mols_core.c
+++ b/drivers/media/i2c/m5mols/m5mols_core.c
@@ -337,7 +337,7 @@ int m5mols_wait_interrupt(struct v4l2_subdev *sd, u8 irq_mask, u32 timeout)
 	struct m5mols_info *info = to_m5mols(sd);
 
 	int ret = wait_event_interruptible_timeout(info->irq_waitq,
-				atomic_add_unless(&info->irq_done, -1, 0),
+				atomic_dec_not_zero(&info->irq_done),
 				msecs_to_jiffies(timeout));
 	if (ret <= 0)
 		return ret ? ret : -ETIMEDOUT;
-- 
2.9.3