From: Maarten Lankhorst <m.b.lankhorst@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxx
---
drivers/usb/host/xhci-pci.c | 8 ++++++++
drivers/usb/host/xhci.c | 2 ++
drivers/usb/host/xhci.h | 1 +
3 files changed, 11 insertions(+), 0 deletions(-)
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 15eb4c3..f5fe1ac 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 ba90af1..d8bbf5c 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -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 */
--
1.7.4.1
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