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SubjectRe: [PATCH 1/1] xhci: Recognize USB 3.0 devices as superspeed at powerup
From
On Thu, Aug 23, 2012 at 12:53 AM,  <manoj.iyer@canonical.com> wrote:
> From: Manoj Iyer <manoj.iyer@canonical.com>
>
> 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
>
> Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com>

This one looks OK to me.

Thanks,
Andiry

> ---
> drivers/usb/host/pci-quirks.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
> index c5e9e4a..486e812 100644
> --- a/drivers/usb/host/pci-quirks.c
> +++ b/drivers/usb/host/pci-quirks.c
> @@ -870,9 +870,10 @@ static void __devinit quirk_usb_handoff_xhci(struct pci_dev *pdev)
> /* 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
> --
> 1.7.9.5
>


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