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(parent: 9e19b73) | patch
cpuidle: Check the result of cpuidle_get_driver() against NULL
authorDaniel Fu <danifu@nvidia.com>
Fri, 30 Aug 2013 11:48:22 +0000 (19:48 +0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Fri, 30 Aug 2013 19:53:41 +0000 (21:53 +0200)
commit3b9c10e98021e1f92e6f8c7ce1778b86ba68db10
treee8c2963b4d5a2c8d90836fc069256c733be54232tree | snapshot
parent9e19b73c30a5fa42a53583a1f7817dd857126156commit | diff
cpuidle: Check the result of cpuidle_get_driver() against NULL

If the current CPU has no cpuidle driver, drv will be NULL in
cpuidle_driver_ref().  Check if that is the case before trying
to bump up the driver's refcount to prevent the kernel from
crashing.

[rjw: Subject and changelog]
Signed-off-by: Daniel Fu <danifu@nvidia.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/cpuidle/driver.c diff | blob | history
Andy's Linux Kernel repo