Re: [PATCH 3/4] Input: Ignore the KEY_POWER events if hibernation is in progress

["Rafael J. Wysocki" <rafael@kernel.org>]

On Fri, Nov 7, 2025 at 7:45 PM Muhammad Usama Anjum
<usama.anjum@collabora.com> wrote:
>
> Input (Serio) drivers call input_handle_event(). Although the serio
> drivers have duplicate events, they have separate code path and call
> input_handle_event(). Ignore the KEY_POWER such that this event isn't
> sent to the userspace if hibernation is in progress.

Your change affects suspend too.

Also, what's the goal you want to achieve?

> Abort the hibernation by calling pm_wakeup_dev_event(). In case of serio,
> doesn't have wakeup source registered, this call doesn't do anything.
> But there may be other input drivers which will require this.
>
> Without this, the event is sent to the userspace and it suspends the
> device after hibernation cancellation.

I think that's because user space handles it this way, isn't it?

> Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
> ---
> Changes since RFC:
> - Use pm_sleep_transition_in_progress()
> - Update description
> ---
>  drivers/input/input.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/drivers/input/input.c b/drivers/input/input.c
> index a500e1e276c21..7939bd9e47668 100644
> --- a/drivers/input/input.c
> +++ b/drivers/input/input.c
> @@ -26,6 +26,7 @@
>  #include <linux/kstrtox.h>
>  #include <linux/mutex.h>
>  #include <linux/rcupdate.h>
> +#include <linux/suspend.h>
>  #include "input-compat.h"
>  #include "input-core-private.h"
>  #include "input-poller.h"
> @@ -362,6 +363,11 @@ void input_handle_event(struct input_dev *dev,
>
>         lockdep_assert_held(&dev->event_lock);
>
> +       if (code == KEY_POWER && pm_sleep_transition_in_progress()) {
> +               pm_wakeup_dev_event(&dev->dev, 0, true);
> +               return;
> +       }
> +
>         disposition = input_get_disposition(dev, type, code, &value);
>         if (disposition != INPUT_IGNORE_EVENT) {
>                 if (type != EV_SYN)
> --