ACK: [SRU] [Unstable/OEM-5.6] [PATCH 0/1] Enable ASPM for links under VMD domain

[Stefan Bader]

On 21.08.20 16:34, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1889384
> 
> [Impact]
> New Intel laptops with VMD cannot reach deeper power saving state,
> renders very short battery time.
> 
> [Fix]
> Introduce a new quirk to program ASPM settings on bridges under VMD.
> 
> [Test Case]
> A simple command to grep current LnkCtl state:
> 
>   $ sudo lspci -vv | grep -E '^(1|\s+LnkCtl:)'
> 
> Confirm ASPM is enabled.
> 
> [Regression Potential]
> None. The quirk matches device IDs that are specific to Intel Tigerlake
> systems, which are not on the market yet.
> 
> Kai-Heng Feng (1):
>   PCI/ASPM: Enable ASPM for links under VMD domain
> 
>  drivers/pci/pcie/aspm.c |  3 ++-
>  drivers/pci/quirks.c    | 11 +++++++++++
>  include/linux/pci.h     |  2 ++
>  3 files changed, 15 insertions(+), 1 deletion(-)
> 
Acked-by: Stefan Bader <stefan.bader at canonical.com>

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