On Wed, Aug 17, 2022 at 1:58 PM Artur Rojek [off-list ref] wrote:

Don't try to access buffer data of a channel by its scan index. Instead,
use the newly introduced `iio_find_channel_offset_in_buffer` to get the
correct data offset.

The scan index of a channel does not represent its position in a buffer,
as the buffer will contain data for enabled channels only, affecting
data offsets and alignment.

Fixes: 2c2b364fddd5 ("Input: joystick - add ADC attached joystick driver.")

You may not use Fixes here because it has dependencies. The possible
solutions are:
1/
a) create a real fix for the existing code;
b) refactor it.

2/
 put the Fixes tag to all dependencies (which is questionable).

Reported-by: Chris Morgan <redacted>
Tested-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Artur Rojek <redacted>

Try to keep tags in chronological order, I do not believe the change
may be tested before it has been created.

-- 
With Best Regards,
Andy Shevchenko