This is a note to let you know that I've just added the patch titled
xhci: Add reset resume quirk for AMD xhci controller.
to the 5.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xhci-add-reset-resume-quirk-for-amd-xhci-controller.patch
and it can be found in the queue-5.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3c128781d8da463761495aaf8898c9ecb4e71528 Mon Sep 17 00:00:00 2001
From: Sandeep Singh <sandeep.singh@xxxxxxx>
Date: Wed, 12 May 2021 11:08:16 +0300
Subject: xhci: Add reset resume quirk for AMD xhci controller.
From: Sandeep Singh <sandeep.singh@xxxxxxx>
commit 3c128781d8da463761495aaf8898c9ecb4e71528 upstream.
One of AMD xhci controller require reset on resume.
Occasionally AMD xhci controller does not respond to
Stop endpoint command.
Once the issue happens controller goes into bad state
and in that case controller needs to be reset.
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Sandeep Singh <sandeep.singh@xxxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210512080816.866037-6-mathias.nyman@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci-pci.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -167,8 +167,10 @@ static void xhci_pci_quirks(struct devic
(pdev->device == 0x15e0 || pdev->device == 0x15e1))
xhci->quirks |= XHCI_SNPS_BROKEN_SUSPEND;
- if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x15e5)
+ if (pdev->vendor == PCI_VENDOR_ID_AMD && pdev->device == 0x15e5) {
xhci->quirks |= XHCI_DISABLE_SPARSE;
+ xhci->quirks |= XHCI_RESET_ON_RESUME;
+ }
if (pdev->vendor == PCI_VENDOR_ID_AMD)
xhci->quirks |= XHCI_TRUST_TX_LENGTH;
Patches currently in stable-queue which might be from sandeep.singh@xxxxxxx are
queue-5.12/xhci-add-reset-resume-quirk-for-amd-xhci-controller.patch
