From: Johan Hovold <johan@kernel.org>
Date: Tue, 1 Nov 2016 10:49:56 +0000 (+0100)
Subject: PM / sleep: fix device reference leak in test_suspend
X-Git-Tag: v4.9-rc5~11^2^3~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ceb75787bc75d0a7b88519ab8a68067ac690f55a;p=platform%2Fkernel%2Flinux-exynos.git

PM / sleep: fix device reference leak in test_suspend

Make sure to drop the reference taken by class_find_device() after
opening the RTC device.

Fixes: 77437fd4e61f (pm: boot time suspend selftest)
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/kernel/power/suspend_test.c b/kernel/power/suspend_test.c
index 084452e..bdff5ed 100644
--- a/kernel/power/suspend_test.c
+++ b/kernel/power/suspend_test.c
@@ -203,8 +203,10 @@ static int __init test_suspend(void)
 
 	/* RTCs have initialized by now too ... can we use one? */
 	dev = class_find_device(rtc_class, NULL, NULL, has_wakealarm);
-	if (dev)
+	if (dev) {
 		rtc = rtc_class_open(dev_name(dev));
+		put_device(dev);
+	}
 	if (!rtc) {
 		printk(warn_no_rtc);
 		return 0;