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>
This commit is contained in:
Babu Moger 2016-10-21 15:25:05 -07:00 коммит произвёл Greg Kroah-Hartman
Родитель 2e52ec2394
Коммит c289d0eff3
1 изменённых файлов: 8 добавлений и 0 удалений

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@ -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);