ACK: [SRU] [OEM-5.10/OEM-5.13] [PATCH 0/2] Backport AMD nvme workaround

Guilherme Piccoli gpiccoli at canonical.com
Thu Jul 1 13:02:05 UTC 2021


On Thu, Jul 1, 2021 at 2:18 AM Kai-Heng Feng
<kai.heng.feng at canonical.com> wrote:
>
> BugLink: https://bugs.launchpad.net/bugs/1930719
>
> [Impact]
> S2idle still fails on some AMD Renoir laptops.
>
> [Fix]
> Commit "nvme-pci: look for StorageD3Enable on companion ACPI device
> instead" requires correspondence change in ACPI to really work.
>
> [Test]
> AMD confirmed the two commits can make the s2idle work on Renoir
> platforms.
>
> [Where problems could occur]
> If any AMD platform actually supports D3cold, this change may increase
> power consumption.
>
> Mario Limonciello (2):
>   ACPI: Check StorageD3Enable _DSD property in ACPI code
>   ACPI: Add quirks for AMD Renoir/Lucienne CPUs to force the D3 hint
>
>  drivers/acpi/device_pm.c | 32 ++++++++++++++++++++++++++++++++
>  drivers/acpi/internal.h  |  9 +++++++++
>  drivers/acpi/x86/utils.c | 25 +++++++++++++++++++++++++
>  drivers/nvme/host/pci.c  | 28 +---------------------------
>  include/linux/acpi.h     |  5 +++++
>  5 files changed, 72 insertions(+), 27 deletions(-)
>

Thanks Kai-Heng Feng, patches LGTM:

Acked-by: Guilherme G. Piccoli <gpiccoli at canonical.com>



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