Hi Dinghao,
On Wed, Apr 07, 2021 at 12:07:38PM +0800, Dinghao Liu wrote:
> When mutex_lock_interruptible() fails, a pairing PM usage
> counter decrement is needed to keep the counter balanced.
Thank you for the patch.
>
> Signed-off-by: Dinghao Liu <dinghao....@zju.edu.cn>
> ---
> drivers/input/mouse/cyapa.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c
> index 77cc653edca2..e411ab45a218 100644
> --- a/drivers/input/mouse/cyapa.c
> +++ b/drivers/input/mouse/cyapa.c
> @@ -904,8 +904,10 @@ static ssize_t cyapa_update_rt_suspend_scanrate(struct
> device *dev,
> pm_runtime_get_sync(dev);
>
> error = mutex_lock_interruptible(&cyapa->state_sync_lock);
> - if (error)
> + if (error) {
> + pm_runtime_put_noidle(dev);
Why "noidle" and not pm_runtime_put_sync_autosuspend() like we do in
case of normal flow?
> return error;
> + }
>
> cyapa->runtime_suspend_sleep_time = min_t(u16, time, 1000);
> cyapa->runtime_suspend_power_mode =
> --
> 2.17.1
>
Thanks.
--
Dmitry
