* [PATCH 10/14] PM / Hibernate: 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/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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