3.0-stable review patch. If anyone has any objections, please let me know.
------------------ From: Manoj Iyer <manoj.i...@canonical.com> commit 29d214576f936db627ff62afb9ef438eea18bcd2 upstream. On Intel Panther Point chipset USB 3.0 devices show up as high-speed devices on powerup, but after an s3 cycle they are correctly recognized as SuperSpeed. At powerup switch the port to xHCI so that USB 3.0 devices are correctly recognized. BugLink: http://bugs.launchpad.net/bugs/1000424 This patch should be backported to kernels as old as 3.0, that contain commit ID 69e848c2090aebba5698a1620604c7dccb448684 "Intel xhci: Support EHCI/xHCI port switching." Signed-off-by: Manoj Iyer <manoj.i...@canonical.com> Signed-off-by: Sarah Sharp <sarah.a.sh...@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/usb/host/pci-quirks.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -895,9 +895,10 @@ static void __devinit quirk_usb_handoff_ /* Disable any BIOS SMIs and clear all SMI events*/ writel(val, base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET); +hc_init: if (usb_is_intel_switchable_xhci(pdev)) usb_enable_xhci_ports(pdev); -hc_init: + op_reg_base = base + XHCI_HC_LENGTH(readl(base)); /* Wait for the host controller to be ready before writing any -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
