[PATCH 11/14] PM: use atomic_dec_not_zero()
From: Fabian Frederick <hidden>
Date: 2017-01-30 18:50:15
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/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