Searched hist:"1 b0a0e9a15b976d91f3b5ae619c6a8964c2818eb" (Results 1 – 1 of 1) sorted by relevance
| /linux/drivers/cpuidle/ |
| H A D | cpuidle.c | diff 1b0a0e9a15b976d91f3b5ae619c6a8964c2818eb Fri May 04 23:06:02 CEST 2012 Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> cpuidle: add checks to avoid NULL pointer dereference
The existing check for dev == NULL in __cpuidle_register_device() is
rendered useless because dev is dereferenced before the check itself.
Moreover, correctly speaking, it is the job of the callers of this
function, i.e., cpuidle_register_device() & cpuidle_enable_device() (which
also happen to be exported functions) to ensure that
__cpuidle_register_device() is called with a non-NULL dev.
So add the necessary dev == NULL checks in the two callers and remove the
(useless) check from __cpuidle_register_device().
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
|