Regression from 3c196f056666 ("drm/amdgpu: always reset the asic in suspend (v2)") on suspend?

[Thorsten Leemhuis]

[TLDR: I'm adding the regression report below to regzbot, the Linux
kernel regression tracking bot; all text you find below is compiled from
a few templates paragraphs you might have encountered already already
from similar mails.]

Hi, this is your Linux kernel regression tracker speaking.

CCing the regression mailing list, as it should be in the loop for all
regressions, as explained here:
https://www.kernel.org/doc/html/latest/admin-guide/reporting-issues.html

To be sure this issue doesn't fall through the cracks unnoticed, I'm
adding it to regzbot, my Linux kernel regression tracking bot:

#regzbot ^introduced 3c196f056666
#regzbot title amdgfx: suspend stopped working
#regzbot ignore-activity
#regzbot link: https://bugs.debian.org/1005005

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again allows the bot to show the current status of regressions and
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I'm sending this to everyone that got the initial report, to make them
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even regzbot involved when dealing with regressions, as messages like
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Don't worry, I'll send further messages wrt to this regression just to
the lists (with a tag in the subject so people can filter them away), if
they are relevant just for regzbot. With a bit of luck no such messages
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Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)

P.S.: As the Linux kernel's regression tracker I'm getting a lot of
reports on my table. I can only look briefly into most of them and lack
knowledge about most of the areas they concern. I thus unfortunately
will sometimes get things wrong or miss something important. I hope
that's not the case here; if you think it is, don't hesitate to tell me
in a public reply, it's in everyone's interest to set the public record
straight.


On 12.02.22 19:23, Salvatore Bonaccorso wrote:
> Hi Alex, hi all
> 
> In Debian we got a regression report from Dominique Dumont, CC'ed in
> https://bugs.debian.org/1005005 that afer an update to 5.15.15 based
> kernel, his machine noe longer suspends correctly, after screen going
> black as usual it comes back. The Debian bug above contians a trace.
> 
> Dominique confirmed that this issue persisted after updating to 5.16.7
> furthermore he bisected the issue and found 
> 
> 	3c196f05666610912645c7c5d9107706003f67c3 is the first bad commit
> 	commit 3c196f05666610912645c7c5d9107706003f67c3
> 	Author: Alex Deucher <alexander.deucher at amd.com>
> 	Date:   Fri Nov 12 11:25:30 2021 -0500
> 
> 	    drm/amdgpu: always reset the asic in suspend (v2)
> 
> 	    [ Upstream commit daf8de0874ab5b74b38a38726fdd3d07ef98a7ee ]
> 
> 	    If the platform suspend happens to fail and the power rail
> 	    is not turned off, the GPU will be in an unknown state on
> 	    resume, so reset the asic so that it will be in a known
> 	    good state on resume even if the platform suspend failed.
> 
> 	    v2: handle s0ix
> 
> 	    Acked-by: Luben Tuikov <luben.tuikov at amd.com>
> 	    Acked-by: Evan Quan <evan.quan at amd.com>
> 	    Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> 	    Signed-off-by: Sasha Levin <sashal at kernel.org>
> 
> 	 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 5 ++++-
> 	 1 file changed, 4 insertions(+), 1 deletion(-)
> 
> to be the first bad commit, see https://bugs.debian.org/1005005#34 .
> 
> Does this ring any bell? Any idea on the problem?
> 
> Regards,
> Salvatore

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