This is a note to let you know that I've just added the patch titled
xhci: Fix resume issue of some ZHAOXIN hosts
to the 6.4-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-fix-resume-issue-of-some-zhaoxin-hosts.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f927728186f0de1167262d6a632f9f7e96433d1a Mon Sep 17 00:00:00 2001
From: Weitao Wang <WeitaoWang-oc@xxxxxxxxxxx>
Date: Fri, 2 Jun 2023 17:40:06 +0300
Subject: xhci: Fix resume issue of some ZHAOXIN hosts
From: Weitao Wang <WeitaoWang-oc@xxxxxxxxxxx>
commit f927728186f0de1167262d6a632f9f7e96433d1a upstream.
On ZHAOXIN ZX-100 project, xHCI can't work normally after resume
from system Sx state. To fix this issue, when resume from system
Sx state, reinitialize xHCI instead of restore.
So, Add XHCI_RESET_ON_RESUME quirk for ZX-100 to fix issue of
resuming from system Sx state.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Weitao Wang <WeitaoWang-oc@xxxxxxxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Message-ID: <20230602144009.1225632-9-mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci-pci.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -528,6 +528,11 @@ static void xhci_pci_quirks(struct devic
pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4))
xhci->quirks |= XHCI_NO_SOFT_RETRY;
+ if (pdev->vendor == PCI_VENDOR_ID_ZHAOXIN) {
+ if (pdev->device == 0x9202)
+ xhci->quirks |= XHCI_RESET_ON_RESUME;
+ }
+
/* xHC spec requires PCI devices to support D3hot and D3cold */
if (xhci->hci_version >= 0x120)
xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
Patches currently in stable-queue which might be from WeitaoWang-oc@xxxxxxxxxxx are
queue-6.4/xhci-fix-resume-issue-of-some-zhaoxin-hosts.patch
queue-6.4/xhci-fix-trb-prefetch-issue-of-zhaoxin-hosts.patch
queue-6.4/xhci-show-zhaoxin-xhci-root-hub-speed-correctly.patch
