USB: Fix NEC OHCI chip silicon bug

[karo-tx-linux.git] / drivers / usb / host / ohci-pci.c

diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index 15013f4519ad658b1b3f2f581513c283417cd512..a5e2eb85d073bd69cb9e356cffc5f202e489d305 100644 (file)
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -111,6 +111,18 @@ static int ohci_quirk_toshiba_scc(struct usb_hcd *hcd)
 #endif
 }
 
+/* Check for NEC chip and apply quirk for allegedly lost interrupts.
+ */
+static int ohci_quirk_nec(struct usb_hcd *hcd)
+{
+       struct ohci_hcd *ohci = hcd_to_ohci (hcd);
+
+       ohci->flags |= OHCI_QUIRK_NEC;
+       ohci_dbg (ohci, "enabled NEC chipset lost interrupt quirk\n");
+
+       return 0;
+}
+
 /* List of quirks for OHCI */
 static const struct pci_device_id ohci_pci_quirks[] = {
        {
@@ -133,6 +145,10 @@ static const struct pci_device_id ohci_pci_quirks[] = {
                PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, 0x01b6),
                .driver_data = (unsigned long)ohci_quirk_toshiba_scc,
        },
+       {
+               PCI_DEVICE(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB),
+               .driver_data = (unsigned long)ohci_quirk_nec,
+       },
        {
                /* Toshiba portege 4000 */
                .vendor         = PCI_VENDOR_ID_AL,