# Re: \[PATCH v3 2/3\] input: gpio-keys: Use hrtimer for release timer

- From: Dmitry Torokhov \<dmitry.torokhov@gmail.com\>
- Date: 2021-03-23 21:34:24 
- List: linux-input
- Page: https://ratatoskr.run/linux-input/2021/03/6312892
- Thread: https://ratatoskr.run/linux-input/2021/03/6291499/t.md

```text
On Sun, Mar 07, 2021 at 10:22:39PM +0000, Paul Cercueil wrote:
> Dealing with input, timing is important; if the button should be
> released in one millisecond, then it should be done in one millisecond
> and not a hundred milliseconds.
> 
> Therefore, the standard timer API is not really suitable for this task.
> 
> Convert the gpio-keys driver to use a hrtimer instead of the standard
> timer to address this issue.
> 
> Note that by using a hard IRQ for the hrtimer callback, we can get rid
> of the spin_lock_irqsave() and spin_unlock_irqrestore().
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>

Applied, thank you.

-- 
Dmitry
```