[PATCH 10/14] PM / Hibernate: use atomic_dec_not_zero()

From	Fabian Frederick <fabf@skynet.be>
Newsgroups	linux.kernel
Subject	[PATCH 10/14] PM / Hibernate: use atomic_dec_not_zero()
Date	2017-01-30 20:00 +0100
Message-ID	<t5plg-7sP-15@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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instead of atomic_add_unless(value, -1, 0)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
---
 kernel/power/hibernate.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index b26dbc4..cfa7930 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -691,7 +691,7 @@ int hibernate(void)
 
 	lock_system_sleep();
 	/* The snapshot device should not be opened while we're running */
-	if (!atomic_add_unless(&snapshot_device_available, -1, 0)) {
+	if (!atomic_dec_not_zero(&snapshot_device_available)) {
 		error = -EBUSY;
 		goto Unlock;
 	}
@@ -866,7 +866,7 @@ static int software_resume(void)
 		goto Unlock;
 
 	/* The snapshot device should not be opened while we're running */
-	if (!atomic_add_unless(&snapshot_device_available, -1, 0)) {
+	if (!atomic_dec_not_zero(&snapshot_device_available)) {
 		error = -EBUSY;
 		swsusp_close(FMODE_READ);
 		goto Unlock;
-- 
2.9.3

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[PATCH 10/14] PM / Hibernate: use atomic_dec_not_zero() Fabian Frederick <fabf@skynet.be> - 2017-01-30 20:00 +0100

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