NACK: [PATCH 0/1][SRU][OEM-5.10/OEM-5.13/H/I/U] add PCI bridge IDs for ADL-M/P/S

[You-Sheng Yang]

missed oem-5.14 in the nomination list

On 8/31/21 4:48 PM, You-Sheng Yang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1942160
> 
> [Impact]
> 
> VMD PCI-E bridges on ADL-M/P/S use new device IDs and therefore not
> covered by previous LTR reset fix in bug 1896598.
> 
> [Fix]
> 
> Additional entires to vmd_bridge_tbl in drivers/pci/quirks.c is
> requierd:
> * ADL-M: [8086:464d]
> * ADL-P: [8086:51b0]
> * ADL-S: [8086:7ab4]
> 
> [Test Case]
> 
> $ sudo lspci -vvn | grep -E '^(1|\s+LnkCtl:)'
> ...
> 10000:e0:1d.4 0604: 8086:7ab4 (rev 10) (prog-if 00 [Normal decode])
>                 LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
> 10000:e1:00.0 0108: 8086:0975 (rev 03) (prog-if 02 [NVM Express])
>                 LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
> 
> [Where problems could occur]
> 
> This will reset zeroed PCI_LTR_MAX_SNOOP_LAT and PCI_LTR_MAX_NOSNOOP_LAT
> values to a fixed 3145728ns that is used on Windows. Devices might want
> to set itself to a smaller value, but while this is not yet correctly
> supported by VMD controller driver, so the device power consumption
> might be little worse than ideal.
> 
> [Other Info]
> 
> VMD ASPM was first supported for Tiger Lake cpus, so all kernel versions
> newer than 5.6 should have already the supporting function. This patch
> targets Alder Lake cpus that are supported since 5.10-oem and on.
> 
> You-Sheng Yang (1):
>   UBUNTU: SAUCE: vmd: add PCI bridge IDs for ADL-M/P/S
> 
>  drivers/pci/quirks.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>