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| author | Jon Medhurst (Tixy) <[email protected]> | 2012-08-15 20:11:00 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2012-08-17 17:37:08 +0000 |
| commit | 5fbbb90dfdedb9a258550e4e5debd3013266372e (patch) | |
| tree | 86f4ad339e193301a8ac2626cc28e664978089b7 /arch/powerpc/lib/code-patching.c | |
| parent | cpuidle: coupled: fix sleeping while atomic in cpu notifier (diff) | |
| download | kernel-5fbbb90dfdedb9a258550e4e5debd3013266372e.tar.gz kernel-5fbbb90dfdedb9a258550e4e5debd3013266372e.zip | |
cpuidle: Prevent null pointer dereference in cpuidle_coupled_cpu_notify
When a kernel is built to support multiple hardware types it's possible
that CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is set but the hardware the
kernel is run on doesn't support cpuidle and therefore doesn't load a
driver for it. In this case, when the system is shut down,
cpuidle_coupled_cpu_notify() gets called with cpuidle_devices set to
NULL. There are quite possibly other circumstances where this
situation can also occur and we should check for it.
Signed-off-by: Jon Medhurst <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'arch/powerpc/lib/code-patching.c')
0 files changed, 0 insertions, 0 deletions