Re: [libgpiod v2][PATCH] treewide: allow polling functions to block indefinitely

[Andy Shevchenko <andy.shevchenko@xxxxxxxxx>]

On Fri, Jul 1, 2022 at 1:06 PM Bartosz Golaszewski <brgl@xxxxxxxx> wrote:
>
> All polling system calls have some way of being instructed to block
> indefinitely until some event is registered on the file descriptor.
>
> Make both the gpiod_chip_wait_info_event() and
> gpiod_line_request_wait_edge_event() accept negative timeout values in
> which case the underlying ppoll() will block indefinitely.

Long time no user space done by me, so here my silly question: how to
kill a task that is blocking indefinitely in ppoll()?

-- 
With Best Regards,
Andy Shevchenko