On Wed, 28 Feb 2024 at 00:19, Douglas Anderson <dianders@xxxxxxxxxxxx> wrote:
>
> Even though the UDL driver converts to RGB565 internally (see
> pixel32_to_be16() in udl_transfer.c), it advertises XRGB8888 for
> compatibility. Let's add ARGB8888 to that list.
>
> This makes UDL devices work on ChromeOS again after commit
> c91acda3a380 ("drm/gem: Check for valid formats"). Prior to that
> commit things were "working" because we'd silently treat the ARGB8888
> that ChromeOS wanted as XRGB8888.
>
> Fixes: c91acda3a380 ("drm/gem: Check for valid formats")
> Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
> ---
>
> drivers/gpu/drm/udl/udl_modeset.c | 1 +
> 1 file changed, 1 insertion(+)
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
--
With best wishes
Dmitry
