xhci: fix issue with resume from system Sx state

zhaoxin inclusion
category: feature
bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=19


CVE: NA

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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.

The patch is scheduled to be submitted to the kernel mainline in 2021.

Signed-off-by: LeoLiu-oc <LeoLiu-oc@zhaoxin.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Reviewed-by: LeoLiu-oc <LeoLiu-oc@zhaoxin.com>
Signed-off-by: Cheng Jian <cj.chengjian@huawei.com>

drivers/usb/host/xhci-pci.c

@@ -247,6 +247,9 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 	if (pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241)
 		xhci->quirks |= XHCI_LIMIT_ENDPOINT_INTERVAL_7;
 
+	if (pdev->vendor == PCI_VENDOR_ID_ZHAOXIN && pdev->device == 0x9202)
+		xhci->quirks |= XHCI_RESET_ON_RESUME;
+
 	if ((pdev->vendor == PCI_VENDOR_ID_BROADCOM ||
 	     pdev->vendor == PCI_VENDOR_ID_CAVIUM) &&
 	     pdev->device == 0x9026)