Commit 3557c9ae authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

Merge tag 'for-usb-linus-2012-08-09' of... 

Merge tag 'for-usb-linus-2012-08-09' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into usb-linus

Intel xhci: Work around immediate reboot on shutdown.

Hi Greg,

I'm cleaning out my queue before I leave on vacation tomorrow, so here's
one more patch for 3.6.  It works around an issue on a couple Intel
Panther Point desktop systems that cause them to reboot about 10 seconds
after the user shutdowns the system.

Sarah Sharp
parents ded737fe e95829f4

drivers/usb/host/pci-quirks.c

+7 −0
Original line number Diff line number Diff line
@@ -800,6 +800,13 @@ void usb_enable_xhci_ports(struct pci_dev *xhci_pdev) 
}

EXPORT_SYMBOL_GPL(usb_enable_xhci_ports);



void usb_disable_xhci_ports(struct pci_dev *xhci_pdev)

{

	pci_write_config_dword(xhci_pdev, USB_INTEL_USB3_PSSEN, 0x0);

	pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 0x0);

}

EXPORT_SYMBOL_GPL(usb_disable_xhci_ports);



/**

 * PCI Quirks for xHCI.

 *

drivers/usb/host/pci-quirks.h

+1 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ void usb_amd_quirk_pll_disable(void); 
void usb_amd_quirk_pll_enable(void);

bool usb_is_intel_switchable_xhci(struct pci_dev *pdev);

void usb_enable_xhci_ports(struct pci_dev *xhci_pdev);

void usb_disable_xhci_ports(struct pci_dev *xhci_pdev);

#else

static inline void usb_amd_quirk_pll_disable(void) {}

static inline void usb_amd_quirk_pll_enable(void) {}

drivers/usb/host/xhci-pci.c

+9 −0
Original line number Diff line number Diff line
@@ -94,6 +94,15 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) 
		xhci->quirks |= XHCI_EP_LIMIT_QUIRK;

		xhci->limit_active_eps = 64;

		xhci->quirks |= XHCI_SW_BW_CHECKING;

		/*

		 * PPT desktop boards DH77EB and DH77DF will power back on after

		 * a few seconds of being shutdown.  The fix for this is to

		 * switch the ports from xHCI to EHCI on shutdown.  We can't use

		 * DMI information to find those particular boards (since each

		 * vendor will change the board name), so we have to key off all

		 * PPT chipsets.

		 */

		xhci->quirks |= XHCI_SPURIOUS_REBOOT;

	}

	if (pdev->vendor == PCI_VENDOR_ID_ETRON &&

			pdev->device == PCI_DEVICE_ID_ASROCK_P67) {

drivers/usb/host/xhci.c

+3 −0
Original line number Diff line number Diff line
@@ -659,6 +659,9 @@ void xhci_shutdown(struct usb_hcd *hcd) 
{

	struct xhci_hcd *xhci = hcd_to_xhci(hcd);



	if (xhci->quirks && XHCI_SPURIOUS_REBOOT)

		usb_disable_xhci_ports(to_pci_dev(hcd->self.controller));



	spin_lock_irq(&xhci->lock);

	xhci_halt(xhci);

	spin_unlock_irq(&xhci->lock);

drivers/usb/host/xhci.h

+1 −0
Original line number Diff line number Diff line
@@ -1494,6 +1494,7 @@ struct xhci_hcd { 
#define XHCI_TRUST_TX_LENGTH	(1 << 10)

#define XHCI_LPM_SUPPORT	(1 << 11)

#define XHCI_INTEL_HOST		(1 << 12)

#define XHCI_SPURIOUS_REBOOT	(1 << 13)

	unsigned int		num_active_eps;

	unsigned int		limit_active_eps;

	/* There are two roothubs to keep track of bus suspend info for */

CRA Git | Maintained and supported by SUSTech CRA and CCSE