NAK Re: [PATCH 0/1][SRU][OEM-5.14] Fix system hang during suspend and resume with atlantic nic

[Koba Ko]

On Thu, Jun 9, 2022 at 3:55 PM Timo Aaltonen <tjaalton at ubuntu.com> wrote:
>
> Koba Ko kirjoitti 9.6.2022 klo 8.54:
> > BugLink: https://bugs.launchpad.net/bugs/1978058
> >
> > [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
> >
> > Manuel Ullmann (1):
> >    net: atlantic: always deep reset on pm op, fixing up my null deref
> >      regression
> >
> >   drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c | 4 ++--
> >   1 file changed, 2 insertions(+), 2 deletions(-)
> >
>
> this came via stable backports
I mentioned this.
how could i manage if it came via stable backports?
>
> --
> t