Patch "bus: arm-ccn: Prevent hotplug callback leak" has been added to the 4.9-stable tree

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

bus: arm-ccn: Prevent hotplug callback leak

to the 4.9-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:
bus-arm-ccn-prevent-hotplug-callback-leak.patch
and it can be found in the queue-4.9 subdirectory.

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

From: Thomas Gleixner <[email protected]>
Date: Thu, 22 Dec 2016 11:14:06 +0100
Subject: bus: arm-ccn: Prevent hotplug callback leak

From: Thomas Gleixner <[email protected]>

commit 26242b330093fd14c2e94fb6cbdf0f482ab26576 upstream.

In case the driver registration fails, the hotplug callback is leaked.

Not fatal, because it's never invoked as there are no instances registered, but wrong nevertheless.

---
 drivers/bus/arm-ccn.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

@@ -1570,7 +1570,10 @@ static int __init arm_ccn_init(void)
 	for (i = 0; i < ARRAY_SIZE(arm_ccn_pmu_events); i++)
 		arm_ccn_pmu_events_attrs[i] = &arm_ccn_pmu_events[i].attr.attr;
 
-	return platform_driver_register(&arm_ccn_driver);
+	ret = platform_driver_register(&arm_ccn_driver);
+	if (ret)
+		cpuhp_remove_multi_state(CPUHP_AP_PERF_ARM_CCN_ONLINE);
+	return ret;
 }
 
 static void __exit arm_ccn_exit(void)

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

queue-4.9/bus-arm-ccn-prevent-hotplug-callback-leak.patch