* [PATCH 11/14] PM: use atomic_dec_not_zero()
@ 2017-01-30 18:48 Fabian Frederick
0 siblings, 0 replies; only message in thread
From: Fabian Frederick @ 2017-01-30 18:48 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel, rjw, linux-pm, Fabian Frederick
instead of atomic_add_unless(value, -1, 0)
Signed-off-by: Fabian Frederick <fabf@skynet.be>
---
kernel/power/user.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/power/user.c b/kernel/power/user.c
index 22df9f7..c478572 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -54,7 +54,7 @@ static int snapshot_open(struct inode *inode, struct file *filp)
lock_system_sleep();
- if (!atomic_add_unless(&snapshot_device_available, -1, 0)) {
+ if (!atomic_dec_not_zero(&snapshot_device_available)) {
error = -EBUSY;
goto Unlock;
}
--
2.9.3
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2017-01-30 18:48 [PATCH 11/14] PM: use atomic_dec_not_zero() Fabian Frederick
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