diff options
author | Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> | 2012-05-04 14:06:02 -0700 |
---|---|---|
committer | Len Brown <len.brown@intel.com> | 2012-06-01 16:07:23 -0400 |
commit | 1b0a0e9a15b976d91f3b5ae619c6a8964c2818eb (patch) | |
tree | 4408c6a983c18ca7c8cc1a9d55008b3dd5d33703 /tools | |
parent | 0aeb9cac6f8a6fc68acfb07d30b62ad6106a6384 (diff) | |
download | op-kernel-dev-1b0a0e9a15b976d91f3b5ae619c6a8964c2818eb.zip op-kernel-dev-1b0a0e9a15b976d91f3b5ae619c6a8964c2818eb.tar.gz |
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>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions