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path: root/drivers/usb/host/xhci-pci.c
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Diffstat (limited to 'drivers/usb/host/xhci-pci.c')
-rw-r--r--drivers/usb/host/xhci-pci.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index c408e9f6a707..17541d09eabb 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -106,12 +106,22 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
 
 	/* Look for vendor-specific quirks */
 	if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
-			pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
-			pdev->revision == 0x0) {
+			pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK) {
+		if (pdev->revision == 0x0) {
 			xhci->quirks |= XHCI_RESET_EP_QUIRK;
 			xhci_dbg(xhci, "QUIRK: Fresco Logic xHC needs configure"
 					" endpoint cmd after reset endpoint\n");
+		}
+		/* Fresco Logic confirms: all revisions of this chip do not
+		 * support MSI, even though some of them claim to in their PCI
+		 * capabilities.
+		 */
+		xhci->quirks |= XHCI_BROKEN_MSI;
+		xhci_dbg(xhci, "QUIRK: Fresco Logic revision %u "
+				"has broken MSI implementation\n",
+				pdev->revision);
 	}
+
 	if (pdev->vendor == PCI_VENDOR_ID_NEC)
 		xhci->quirks |= XHCI_NEC_HOST;