Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c289d0ef authored by Babu Moger's avatar Babu Moger Committed by Greg Kroah-Hartman
Browse files

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: default avatarBabu Moger <babu.moger@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 2e52ec23

drivers/usb/host/pci-quirks.c

+8 −0
Original line number Diff line number Diff line
@@ -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);