On Mon, Sep 04, 2017 at 02:52:14PM +0800, Leo Yan wrote:
> commit d50a7d8acd78 ("ARM: cpuidle: Support asymmetric idle definition")
> supports multiple CPU idle driver so every CPU has its own driver. When
> the initialization fails, the failure handling releases the resources
> for every previous CPU; so it needs to retrieve every CPU device and
> driver handler and unregister them. But the function
> cpuidle_get_driver() can only return current CPU driver handler but not
> the iterated CPU driver handler, so it cannot release resource properly.
>
> This patch is to replace cpuidle_get_driver() with
> cpuidle_get_cpu_driver(), every CPU has its own device handler so this
> function can get back correct driver handler for the CPU according to
> the CPU device handler. By using this CPU driver handler we can release
> resource properly.
>
> Cc: Daniel Lezcano <daniel.lezc...@linaro.org>
> Cc: Stefan Wahren <stefan.wah...@i2se.com>
> Signed-off-by: Leo Yan <leo....@linaro.org>
> Fixes: d50a7d8acd78 ("ARM: cpuidle: Support asymmetric idle definition")
Gentle ping.
> ---
> drivers/cpuidle/cpuidle-arm.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/cpuidle/cpuidle-arm.c b/drivers/cpuidle/cpuidle-arm.c
> index f419f6a..ef34780 100644
> --- a/drivers/cpuidle/cpuidle-arm.c
> +++ b/drivers/cpuidle/cpuidle-arm.c
> @@ -161,9 +161,9 @@ static int __init arm_idle_init(void)
>
> while (--cpu >= 0) {
> dev = per_cpu(cpuidle_devices, cpu);
> + drv = cpuidle_get_cpu_driver(dev);
> cpuidle_unregister_device(dev);
> kfree(dev);
> - drv = cpuidle_get_driver();
> cpuidle_unregister_driver(drv);
> kfree(drv);
> }
> --
> 2.7.4
>
