drivers/usb: Skip auto handoff for TI and RENESAS usb controllers

Never seen XHCI auto handoff working on TI and RENESAS cards.
Eventually, we force handoff. This code forces the handoff
unconditionally. It saves 5 seconds boot time for each card.

Signed-off-by: Babu Moger <babu.moger@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
此提交包含在:
Babu Moger
2016-10-21 15:25:05 -07:00
提交者 Greg Kroah-Hartman
父節點 2e52ec2394
當前提交 c289d0eff3

查看文件

@@ -995,6 +995,14 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev)
}
val = readl(base + ext_cap_offset);
/* Auto handoff never worked for these devices. Force it and continue */
if ((pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241) ||
(pdev->vendor == PCI_VENDOR_ID_RENESAS
&& pdev->device == 0x0014)) {
val = (val | XHCI_HC_OS_OWNED) & ~XHCI_HC_BIOS_OWNED;
writel(val, base + ext_cap_offset);
}
/* If the BIOS owns the HC, signal that the OS wants it, and wait */
if (val & XHCI_HC_BIOS_OWNED) {
writel(val | XHCI_HC_OS_OWNED, base + ext_cap_offset);