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xhci: Add reset on resume quirk for asrock p67 host

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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 as old as 2.6.37.

Signed-off-by: Maarten Lankhorst <m.b.lankhorst@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
This commit is contained in:
Maarten Lankhorst 2011-06-15 23:47:21 +02:00 committed by Sarah Sharp
parent f6ba6fe2d9
commit c877b3b2ad
3 changed files with 11 additions and 0 deletions
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8
drivers/usb/host/xhci-pci.c
View File

@ -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);

2
drivers/usb/host/xhci.c
View File

@ -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 */

1
drivers/usb/host/xhci.h
View File

@ -1310,6 +1310,7 @@ 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 */