APPLIED/OEM: Re: [SRU] [Unstable/OEM-B] [PATCH 0/2] r8169 doesn't get woken up by ethernet cable plugging, no PME generated

[Timo Aaltonen]

On 26.2.2019 10.56, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1817676
> 
> [Impact]
> Once r8169 (Realtek ethernet) and its root port enter to D3, plugging
> network cable doesn't wake r8169 up.
> 
> [Fix]
> Revert "PCI/PME: Implement runtime PM callbacks".
> Quote the original commit message:
> "
> The commit tried to prevent root port waking up from D3cold immediately but
> looks like disabing root port PME interrupt is not the right way to fix
> that issue so revert it now.  The patch following proposes an alternative
> solution to that issue.
> "
> 
> [Test]
> After applying the fix, plugging the ethernet cable can generate PME IRQ
> correctly, hence waking up r8169.
> 
> [Regression Potential]
> Medium. The commits are relative new, rely on some PCI detail that I am
> not familiar with (PCI spec isn't publicly available).
> Fortunately we only need this fix for Unstable/OEM-B, so it won't hit
> most users if any regression happens.
> 
> Mika Westerberg (2):
>   Revert "PCI/PME: Implement runtime PM callbacks"
>   PCI: pciehp: Disable Data Link Layer State Changed event on suspend
> 
>  drivers/pci/hotplug/pciehp_hpc.c | 17 +++++++++++++++--
>  drivers/pci/pcie/pme.c           | 27 ---------------------------
>  2 files changed, 15 insertions(+), 29 deletions(-)

applied to oem-next, thanks

-- 
t