[SRU][H][PATCH v2 1/1] usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir

[Greg Kroah-Hartman]

On Fri, Jul 16, 2021 at 12:40:10PM +0200, Werner Sembach wrote:
> From: Mario Limonciello <mario.limonciello at amd.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1936583
> 
> The XHCI controller is required to enter D3hot rather than D3cold for AMD
> s2idle on this hardware generation.
> 
> Otherwise, the 'Controller Not Ready' (CNR) bit is not being cleared by
> host in resume and eventually this results in xhci resume failures during
> the s2idle wakeup.
> 
> Link: https://lore.kernel.org/linux-usb/1612527609-7053-1-git-send-email-Prike.Liang@amd.com/
> Suggested-by: Prike Liang <Prike.Liang at amd.com>
> Signed-off-by: Mario Limonciello <mario.limonciello at amd.com>
> Cc: stable <stable at vger.kernel.org> # 5.11+
> Link: https://lore.kernel.org/r/20210527154534.8900-1-mario.limonciello@amd.com
> Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
> (cherry picked from commit d1658268e43980c071dbffc3d894f6f6c4b6732a)
> Signed-off-by: Werner Sembach <wse at tuxedocomputers.com>
> ---
>  drivers/usb/host/xhci-pci.c | 7 ++++++-
>  drivers/usb/host/xhci.h     | 1 +
>  2 files changed, 7 insertions(+), 1 deletion(-)
> 

Any reason you resent us a patch that is already in a stable release?

And why not just use the stable kernel trees as-is?  Why attempt to
cherry-pick random portions of them?

thanks,

greg k-h