On Wed, Oct 01, 2025 at 04:22:13PM +0300, Tomi Valkeinen wrote: > drm_format_info_bpp() cannot be used for formats which do not have an > integer bits-per-pixel in a pixel block. > > E.g. DRM_FORMAT_XV15's (not yet in upstream) plane 0 has three 10-bit > pixels (Y components), and two padding bits, in a 4 byte block. That is > 10.666... bits per pixel when considering the whole 4 byte block, which > is what drm_format_info_bpp() does. Thus a driver that supports such > formats cannot use drm_format_info_bpp(), > > It is a driver bug if this happens, but so handle wrong calls by > printing a warning and returning 0. > > Reviewed-by: Laurent Pinchart <[email protected]> > Signed-off-by: Tomi Valkeinen <[email protected]> > --- > drivers/gpu/drm/drm_fourcc.c | 14 +++++++++++--- > 1 file changed, 11 insertions(+), 3 deletions(-) >
Reviewed-by: Dmitry Baryshkov <[email protected]> -- With best wishes Dmitry
