On 03.07.2015 17:16, Grigori Goronzy wrote: > On 2015-07-03 05:30, Michel Dänzer wrote: >> >> On resume, the cursor BO is currently pinned again by >> radeon_cursor_reset -> radeon_set_cursor. However, radeon_cursor_reset >> is also called when changing the video mode, in which case it causes the >> cursor BO pin count to increase by 1 for each CRTC using it. Presumably, >> the mouse cursor would end up broken again on suspend/resume after that >> for you. >> > > Indeed. It seems to be problematic overall that radeon_cursor_reset does > unconditionally increment the pin count. As soon as a mode is switched > with cursor enabled, the cursor BO will stay pinned forever.
Exactly, so we can't ignore that for this fix. >> We need a solution which pins the BO again on resume but doesn't >> increase the pin count during a mode change. I'm not sure right now what >> the best way is to achieve that, I'll think about it more later. > > How about this: > > Never let radeon_set_cursor mess with the pin count, do that in > radeon_crtc_cursor_set2 only, and make sure that the reference^Wpin > count is updated accordingly (i.e. exactly one pin per crtc). Then add > some explicit cursor resume code that traverses the crtc list and > re-pins as needed. Maybe that that nice, but should work. Sounds good. I probably won't get around to playing with this before next week, feel free to give it a try in the meantime. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer
