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cpuidle/coupled: Add sanity check for safe_state_index

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Since we are using cpuidle_driver::safe_state_index directly as the
target state index, it is better to add the sanity check at the point
of registering the driver.

Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Xunlei Pang
2015-08-31 11:34:05 +08:00
committed by Rafael J. Wysocki
parent 4c1ed5a607
commit abceaa9cde
3 changed files with 32 additions and 0 deletions
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drivers/cpuidle/driver.c
+4
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@@ -227,6 +227,10 @@ static int __cpuidle_register_driver(struct cpuidle_driver *drv)
if (!drv || !drv->state_count)
return -EINVAL;
ret = cpuidle_coupled_state_verify(drv);
if (ret)
return ret;
if (cpuidle_disabled())
return -ENODEV;