[PATCH 10/14] PM / Hibernate: use atomic_dec_not_zero()
From: Fabian Frederick <hidden>
Date: 2017-01-30 18:50:16
Also in:
lkml
Subsystem:
hibernation (aka software suspend, aka swsusp), suspend to ram, the rest · Maintainers:
"Rafael J. Wysocki", Linus Torvalds
instead of atomic_add_unless(value, -1, 0) Signed-off-by: Fabian Frederick <redacted> --- 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