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ARM: cpuidle: silence error on driver registration failure

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It's perfectly fine to have multiple cpuidle driver compiled in the
build configuration. However, it's not good to throw error on driver
registration failure if some other driver is already initialised and
assigned. In such cases, __cpuidle_register_driver returns -EBUSY and
we can check for such error before throwing the error.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sudeep Holla 2018-06-18 15:34:22 +01:00 committed by Rafael J. Wysocki
parent 7daf201d7f
commit 818489e511
1 changed files with 2 additions and 1 deletions
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3
drivers/cpuidle/cpuidle-arm.c
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@ -105,7 +105,8 @@ static int __init arm_idle_init_cpu(int cpu)
ret = cpuidle_register_driver(drv);
if (ret) {
pr_err("Failed to register cpuidle driver\n");
if (ret != -EBUSY)
pr_err("Failed to register cpuidle driver\n");
goto out_kfree_drv;
}