Den 14-04-2020 kl. 16:07, skrev Alex Deucher:
On Tue, Apr 14, 2020 at 4:21 AM Greg KH greg@kroah.com wrote:
On Mon, Apr 13, 2020 at 01:48:58PM -0400, Alex Deucher wrote:
On Mon, Apr 13, 2020 at 1:47 PM Paul Menzel pmenzel@molgen.mpg.de wrote:
Dear Prike, dear Alex, dear Linux folks,
Am 13.04.20 um 10:44 schrieb Paul Menzel:
A regression between causes a system with the AMD board MSI B350M MORTAR (MS-7A37) with an AMD Ryzen 3 2200G not to power off any more but just to halt.
The regression is introduced in 9ebe5422ad6c..b032227c6293. I am in the process to bisect this, but maybe somebody already has an idea.
I found the Easter egg:
commit 487eca11a321ef33bcf4ca5adb3c0c4954db1b58 Author: Prike Liang Prike.Liang@amd.com Date: Tue Apr 7 20:21:26 2020 +0800
drm/amdgpu: fix gfx hang during suspend with video playback (v2) The system will be hang up during S3 suspend because of SMU is pending for GC not respose the register CP_HQD_ACTIVE access request.This issue root cause of accessing the GC register under enter GFX CGGPG and can be fixed by disable GFX CGPG before perform suspend. v2: Use disable the GFX CGPG instead of RLC safe mode guard. Signed-off-by: Prike Liang <Prike.Liang@amd.com> Tested-by: Mengbing Wang <Mengbing.Wang@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.orgIt reverts cleanly on top of 5.7-rc1, and this fixes the issue.
Greg, please do not apply this to the stable series. The commit message doesn’t even reference a issue/bug report, and doesn’t give a detailed problem description. What system is it?
Dave, Alex, how to proceed? Revert? I created issue 1094 [1].
Already fixed: https://patchwork.freedesktop.org/patch/361195/
Any reason that doesn't have a cc: stable tag on it?
And is it committed to any tree at the moment?
It's going out in my -fixes pull this week with a stable tag.
Alex
The fix is now in linus tree as: b2a7e9735ab2864330be9d00d7f38c961c28de5d
and should be added to fix all theese stable trees where the breakage got added despite the warnings in this thread:
releases/5.4.33/drm-amdgpu-fix-gfx-hang-during-suspend-with-video-pl.patch:[ Upstream commit 487eca11a321ef33bcf4ca5adb3c0c4954db1b58 ] releases/5.6.5/drm-amdgpu-fix-gfx-hang-during-suspend-with-video-pl.patch:[ Upstream commit 487eca11a321ef33bcf4ca5adb3c0c4954db1b58 ] releases/5.5.18/drm-amdgpu-fix-gfx-hang-during-suspend-with-video-pl.patch:[ Upstream commit 487eca11a321ef33bcf4ca5adb3c0c4954db1b58 ]
-- Thomas