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| author | Babu Moger <babu.moger@oracle.com> | 2016-10-21 15:25:05 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-07 10:12:22 +0100 |
| commit | c289d0eff3d5a594c577c0dc162412a2cad075a4 (patch) | |
| tree | db86ca95bc9a72075581b9e695a0a8f0ec85cb8a | |
| parent | 2e52ec2394fb9486fd496737a84d629b2c992db2 (diff) | |
| download | linux-c289d0eff3d5a594c577c0dc162412a2cad075a4.tar.gz linux-c289d0eff3d5a594c577c0dc162412a2cad075a4.tar.bz2 linux-c289d0eff3d5a594c577c0dc162412a2cad075a4.zip | |
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>
| -rw-r--r-- | drivers/usb/host/pci-quirks.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index d793f548dfe2..a9a1e4c40480 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -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); |