On Fri, Jan 04, 2019 at 09:56:10AM +0100, Paul Kocialkowski wrote: > When drivers pass non-empty lists of modifiers for initializing their > planes, we can infer that they allow framebuffer modifiers and set the > driver's allow_fb_modifiers mode config element. > > In case the allow_fb_modifiers element was not set (some drivers tend > to set them after registering planes), the modifiers will still be > registered but won't be available to userspace unless the flag is set > later. However in that case, the IN_FORMATS blob won't be created. > > In order to avoid this case and generally reduce the trouble associated > with the flag, always set allow_fb_modifiers when a non-empty list of > format modifiers is passed at plane init. > > Signed-off-by: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx> The automatic primary plane drm_crtc_init() creates doesn't set this, so looks correct in all cases. Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx> (boolin.com has a bunch of drm-misc committers, so I'll leave pushing to them). -Daniel > --- > drivers/gpu/drm/drm_plane.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c > index 5f650d8fc66b..4cfb56893b7f 100644 > --- a/drivers/gpu/drm/drm_plane.c > +++ b/drivers/gpu/drm/drm_plane.c > @@ -220,6 +220,9 @@ int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, > format_modifier_count++; > } > > + if (format_modifier_count) > + config->allow_fb_modifiers = true; > + > plane->modifier_count = format_modifier_count; > plane->modifiers = kmalloc_array(format_modifier_count, > sizeof(format_modifiers[0]), > -- > 2.20.1 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
