Patch "rtc: brcmstb-waketimer: fix error handling in brcmstb_waketmr_probe()" has been added to the 4.15-stable tree

This is a note to let you know that I've just added the patch titled

rtc: brcmstb-waketimer: fix error handling in brcmstb_waketmr_probe()

to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
rtc-brcmstb-waketimer-fix-error-handling-in-brcmstb_waketmr_probe.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Alexey Khoroshilov <[email protected]>
Date: Sat, 18 Nov 2017 00:15:58 +0300
Subject: rtc: brcmstb-waketimer: fix error handling in brcmstb_waketmr_probe()

From: Alexey Khoroshilov <[email protected]>

[ Upstream commit f2eef045de9defbc6fc6b72b17f0941cbe26c81d ]

brcmstb_waketmr_probe() does not disable timer->clk on error paths.

Found by Linux Driver Verification project (linuxtesting.org).

---
 drivers/rtc/rtc-brcmstb-waketimer.c |   15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

@@ -253,7 +253,7 @@ static int brcmstb_waketmr_probe(struct
 	ret = devm_request_irq(dev, timer->irq, brcmstb_waketmr_irq, 0,
 			       "brcmstb-waketimer", timer);
 	if (ret < 0)
-		return ret;
+		goto err_clk;
 
 	timer->reboot_notifier.notifier_call = brcmstb_waketmr_reboot;
 	register_reboot_notifier(&timer->reboot_notifier);

@@ -262,12 +262,21 @@ static int brcmstb_waketmr_probe(struct
 					 &brcmstb_waketmr_ops, THIS_MODULE);
 	if (IS_ERR(timer->rtc)) {
 		dev_err(dev, "unable to register device\n");
-		unregister_reboot_notifier(&timer->reboot_notifier);
-		return PTR_ERR(timer->rtc);
+		ret = PTR_ERR(timer->rtc);
+		goto err_notifier;
 	}
 
 	dev_info(dev, "registered, with irq %d\n", timer->irq);
 
+	return 0;
+
+err_notifier:
+	unregister_reboot_notifier(&timer->reboot_notifier);
+
+err_clk:
+	if (timer->clk)
+		clk_disable_unprepare(timer->clk);
+
 	return ret;
 }
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.15/rtc-brcmstb-waketimer-fix-error-handling-in-brcmstb_waketmr_probe.patch