tree c0d36234d8108f43a76212d12b437bdf1b752aa8
parent 1f6823faa8c563431a94e614d2b63ce16bb6f658
author Thomas Gleixner <tglx@linutronix.de> 1436617594 +0200
committer Thomas Gleixner <tglx@linutronix.de> 1436617594 +0200

tick/broadcast: Prevent NULL pointer dereference

Dan reported that the recent changes to the broadcast code introduced
a potential NULL dereference.

Add the proper check.

Fixes: e0454311903d "tick/broadcast: Sanity check the shutdown of the local clock_event"
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>