NACK/Cmnt: [PATCH] UBUNTU: SAUCE: PCI/ASPM: Add AlderLake ASPM support for links under VMD domain

Stefan Bader stefan.bader at canonical.com
Fri Jul 23 07:35:06 UTC 2021


On 22.07.21 20:10, Ping Bao wrote:
> BugLink: https://bugs.launchpad.net/bugs/1889384
> 
> Add AlderLake ASPM support for links under VMD to reach deeper power
> saving state.
> 
> Signed-off-by: Ping Bao <ping.a.bao at intel.com>
> ---

The bug report which is referred to suggest that this is already fixed. Also the 
submission gives not indication to which kernel this should be applied if it 
were still required.

-Stefan

>   drivers/pci/quirks.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
> index fb13b3109a43..baa727330cdc 100644
> --- a/drivers/pci/quirks.c
> +++ b/drivers/pci/quirks.c
> @@ -5650,7 +5650,7 @@ DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a,
>   			       PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class);
>   
>   /*
> - * Device [8086:9a09], [8086:a0b0] and [8086:a0bc]
> + * Device [8086:9a09], [8086:a0b0], [8086:a0bc] and [8086:464d]
>    * BIOS may not be able to access config space of devices under VMD domain, so
>    * it relies on software to enable ASPM for links under VMD.
>    */
> @@ -5658,6 +5658,7 @@ static const struct pci_device_id vmd_bridge_tbl[] = {
>   	{ PCI_VDEVICE(INTEL, 0x9a09) },
>   	{ PCI_VDEVICE(INTEL, 0xa0b0) },
>   	{ PCI_VDEVICE(INTEL, 0xa0bc) },
> +	{ PCI_VDEVICE(INTEL, 0x464d) },
>   	{ }
>   };
>   
> 


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