6.1.22: Resume from hibernate fails; bisected

Hi! Since kernel 6.1.22 starting a resume from hibernate by hitting a key on the keyboard fails. However, if the PC was switched off and on again (or reset), the resume is OK. The APU is a Ryzen 5600G.

Bisecting between 6.1.21/22 turned up this:

Author: Tim Huang tim.huang@amd.com Date: Thu Mar 9 16:27:51 2023 +0800

drm/amdgpu: skip ASIC reset for APUs when go to S4

commit b589626674de94d977e81c99bf7905872b991197 upstream.

For GC IP v11.0.4/11, PSP TMR need to be reserved for ASIC mode2 reset. But for S4, when psp suspend, it will destroy the TMR that fails the ASIC reset. [...]

Reverting the commit solves the problem. Thanks.

Rainer Fiebig