xhci: Adjust the UHCI Controllers bit value

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

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Over Current condition is not standardized in the UHCI spec.
Zhaoxin UHCI controllers report Over Current active off.
Intel controllers report it active on, so we'll adjust the bit value.

The patch is scheduled to be submitted to the kernel mainline in 2021.
Signed-off-by: NLeoLiu-oc <LeoLiu-oc@zhaoxin.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Reviewed-by: NLeoLiu-oc <LeoLiu-oc@zhaoxin.com>
Signed-off-by: NCheng Jian <cj.chengjian@huawei.com>

drivers/usb/host/uhci-pci.c

@@ -134,6 +134,9 @@ static int uhci_pci_init(struct usb_hcd *hcd)
 	if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_INTEL)
 		device_set_wakeup_capable(uhci_dev(uhci), true);
 
+	if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_ZHAOXIN)
+		uhci->oc_low = 1;
+
 	/* Set up pointers to PCI-specific functions */
 	uhci->reset_hc = uhci_pci_reset_hc;
 	uhci->check_and_reset_hc = uhci_pci_check_and_reset_hc;