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SubjectRe: [PATCH v2] xhci: Add reset on resume quirk for asrock p67 host
No attached patches, just inline ones please. :)  I've fixed this up for
now, since your first patch was inline.

Sarah Sharp

On Wed, Jun 15, 2011 at 11:47:21PM +0200, Maarten Lankhorst wrote:
> The asrock p67 xhci controller completely dies on resume, add a
> quirk for this, to bring the host back online after a suspend.
>
> This should be backported to stable kernels up until 2.6.37.
>
> Signed-off-by: Maarten Lankhorst <m.b.lankhorst@gmail.com>
> Cc: stable@kernel.org
> ---
> V2: Fix inversed logic, and correct kernel version
>
> diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
> index 17541d0..cb16de2 100644
> --- a/drivers/usb/host/xhci-pci.c
> +++ b/drivers/usb/host/xhci-pci.c
> @@ -29,6 +29,9 @@
> #define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73
> #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK 0x1000
>
> +#define PCI_VENDOR_ID_ETRON 0x1b6f
> +#define PCI_DEVICE_ID_ASROCK_P67 0x7023
> +
> static const char hcd_name[] = "xhci_hcd";
>
> /* called after powerup, by probe or system-pm "wakeup" */
> @@ -134,6 +137,11 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
> xhci->quirks |= XHCI_EP_LIMIT_QUIRK;
> xhci->limit_active_eps = 64;
> }
> + if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
> + pdev->device == PCI_DEVICE_ID_ASROCK_P67) {
> + xhci->quirks |= XHCI_RESET_ON_RESUME;
> + xhci_dbg(xhci, "QUIRK: Resetting on resume\n");
> + }
>
> /* Make sure the HC is halted. */
> retval = xhci_halt(xhci);
> diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
> index 06e7023..17a0a08 100644
> --- a/drivers/usb/host/xhci.c
> +++ b/drivers/usb/host/xhci.c
> @@ -759,6 +759,8 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
> msleep(100);
>
> spin_lock_irq(&xhci->lock);
> + if (xhci->quirks & XHCI_RESET_ON_RESUME)
> + hibernated = true;
>
> if (!hibernated) {
> /* step 1: restore register */
> diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
> index 7d1ea3b..b769a75 100644
> --- a/drivers/usb/host/xhci.h
> +++ b/drivers/usb/host/xhci.h
> @@ -1308,6 +1308,7 @@ struct xhci_hcd {
> */
> #define XHCI_EP_LIMIT_QUIRK (1 << 5)
> #define XHCI_BROKEN_MSI (1 << 6)
> +#define XHCI_RESET_ON_RESUME (1 << 7)
> unsigned int num_active_eps;
> unsigned int limit_active_eps;
> /* There are two roothubs to keep track of bus suspend info for */
>
>




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