Re: [PATCH 2/3] iio: buffer: make sure O_NONBLOCK is respected

[Jonathan Cameron <jic23@kernel.org>]

On Thu, 16 Feb 2023 06:00:00 -0800
Lars-Peter Clausen <lars@metafoo.de> wrote:

> On 2/16/23 02:14, Nuno Sá wrote:
> > For output buffers, there's no guarantee that the buffer won't be full
> > in the first iteration of the loop in which case we would block
> > independently of userspace passing O_NONBLOCK or not. Fix it by always
> > checking the flag before going to sleep.
> >
> > While at it (and as it's a bit related), refactored the loop so that the
> > stop condition is 'written != n', i.e, run the loop until all data has
> > been copied into the IIO buffers. This makes the code a bit simpler.
> >
> > Fixes: 9eeee3b0bf190 ("iio: Add output buffer support")
> > Signed-off-by: Nuno Sá <nuno.sa@analog.com>  
> 
> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
> 
Applied to the fixes-togreg branch of iio.git and marked for stable.

Thanks,

Jonathan