diff options
| author | Babu Moger <babu.moger@oracle.com> | 2016-10-21 22:25:05 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-07 09:12:22 (GMT) |
| commit | c289d0eff3d5a594c577c0dc162412a2cad075a4 (patch) | |
| tree | db86ca95bc9a72075581b9e695a0a8f0ec85cb8a | |
| parent | 2e52ec2394fb9486fd496737a84d629b2c992db2 (diff) | |
| download | linux-c289d0eff3d5a594c577c0dc162412a2cad075a4.tar.xz | |
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 d793f54..a9a1e4c 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); |