Public bug reported:
[Impact]
During suspend and resume, system would hang.
[Fix]
The impact of this regression is the same for resume that I saw on
thaw: the kernel hangs and nothing except SysRq rebooting can be done.
Fixes regression in commit cbe6c3a8f8f4 ("net: atlantic: invert deep
par in pm functions, preventing null derefs"), where I disabled deep
pm resets in suspend and resume, trying to make sense of the
atl_resume_common() deep parameter in the first place.
It turns out, that atlantic always has to deep reset on pm
operations. Even though I expected that and tested resume, I screwed
up by kexec-rebooting into an unpatched kernel, thus missing the
breakage.
This fixup obsoletes the deep parameter of atl_resume_common, but I
leave the cleanup for the maintainers to post to mainline.
Suspend and hibernation were successfully tested by the reporters.
[Test Case]
1. Suspend the machine
2. wake up the machine and check if system could work.
[Where problems could occur]
Low
** Affects: linux-oem-5.14 (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-oem-5.14 (Ubuntu Focal)
Importance: Undecided
Assignee: koba (kobako)
Status: In Progress
** Also affects: linux-oem-5.14 (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: linux (Ubuntu)
** Also affects: linux-oem-5.14 (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: linux-oem-5.14 (Ubuntu Focal)
Status: New => In Progress
** Changed in: linux-oem-5.14 (Ubuntu Focal)
Assignee: (unassigned) => koba (kobako)
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https://bugs.launchpad.net/bugs/1978058
Title:
Fix system hang during suspend and resume with atlantic nic
Status in linux-oem-5.14 package in Ubuntu:
New
Status in linux-oem-5.14 source package in Focal:
In Progress
Bug description:
[Impact]
During suspend and resume, system would hang.
[Fix]
The impact of this regression is the same for resume that I saw on
thaw: the kernel hangs and nothing except SysRq rebooting can be done.
Fixes regression in commit cbe6c3a8f8f4 ("net: atlantic: invert deep
par in pm functions, preventing null derefs"), where I disabled deep
pm resets in suspend and resume, trying to make sense of the
atl_resume_common() deep parameter in the first place.
It turns out, that atlantic always has to deep reset on pm
operations. Even though I expected that and tested resume, I screwed
up by kexec-rebooting into an unpatched kernel, thus missing the
breakage.
This fixup obsoletes the deep parameter of atl_resume_common, but I
leave the cleanup for the maintainers to post to mainline.
Suspend and hibernation were successfully tested by the reporters.
[Test Case]
1. Suspend the machine
2. wake up the machine and check if system could work.
[Where problems could occur]
Low
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