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

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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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Babu Moger 2016-10-21 15:25:05 -07:00 • committed by Greg Kroah-Hartman
commit c289d0eff3
1 changed files with 8 additions and 0 deletions
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8
drivers/usb/host/pci-quirks.c
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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);