diff --git a/[refs] b/[refs]
index a8bf3ee89050..1bf4e8a1c327 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3f3b902ed8147c42a4a9764014c758e6b3f42f51
+refs/heads/master: 7726c3308a92b4a4c3bd059059498fca0e6f8e48
diff --git a/trunk/drivers/pci/quirks.c b/trunk/drivers/pci/quirks.c
index 1a7c48d71dc7..9104671e4b72 100644
--- a/trunk/drivers/pci/quirks.c
+++ b/trunk/drivers/pci/quirks.c
@@ -2166,6 +2166,10 @@ static void __devinit nv_msi_ht_cap_quirk(struct pci_dev *dev)
 	int pos;
 	int found;
 
+	/* Enabling HT MSI mapping on this device breaks MCP51 */
+	if (dev->device == 0x270)
+		return;
+
 	/* check if there is HT MSI cap or enabled on this device */
 	found = ht_check_msi_mapping(dev);