On 8/27/26 19:14, Melissa Wen wrote: > On 27/08/2026 18:37, Melissa Wen wrote: >> On 27/08/2026 15:34, Alex Deucher wrote: >>> On Wed, Aug 26, 2026 at 7:20 AM Melissa Wen <[email protected]> wrote: >>>> PREMULTI was the default DRM blend mode until 9813e158d13d >>>> ("drm/drm_blend: allow blend mode property without PREMULTI") >>>> introduced >>>> the possibility of exposing the blend mode property without PREMULTI >>>> being supported. However, __drm_atomic_helper_plane_state_init() still >>>> resets pixel_blend_mode to PREMULTI (hardcoded), ignoring the supported >>>> mode in this property. In the same series, 860e748bddcc ("drm: ensure >>>> blend mode supported if pixel format with alpha exposed") starts >>>> warning >>>> drivers that supports alpha formats in a given planes but doesn't >>>> support blend mode property, which includes AMD primary and cursor >>>> planes. > [...] >>> I presume you are planning to apply this directly to drm-misc for 7.3? >> >> Right, I'll apply to drm-misc-fixes, just doing it now. > > Or not now. I have to wait for -rc1. > I'll keep it on my radar. Hmmm, that sounds like these fixes will miss -rc1. But wouldn't it be good to get them included there, as they afaik (please correct me if I'm wrong, is easy to mix something up from the outside!) the warnings that Greg described as ""It's not good to boot and have a bunch of warnings already happening, resulting in a "tainted" kernel before I have the chance to break anything manually myself...""[1], as more people then will likely encounter this (and then waste time on bisecting an issue known for weeks for which a fix exists).
Ciao, Thorsten [1] https://lore.kernel.org/all/2026082651-spinning-cornbread-33ba@gregkh/
