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@vger.kernel.org Signed-off-by: Weitao Wang WeitaoWang-oc@zhaoxin.com --- v3->v4 - Add xHCI quirks for ZHAOXIN to every independent patch. - Modify some description of this patch series.
drivers/usb/host/xhci-pci.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index ddb79f23fb3b..46d4d642c9bd 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -527,6 +527,11 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) 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;