diff --git a/[refs] b/[refs]
index 12815ada824b..22c5b3f170d9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b7d2526f5c20385894a5e57b1a4292f5a1741f1b
+refs/heads/master: aac78daf8f37256283f56820ae858add7139c56c
diff --git a/trunk/sound/pci/hda/patch_sigmatel.c b/trunk/sound/pci/hda/patch_sigmatel.c
index c4be3fab94e5..81ecd9388a80 100644
--- a/trunk/sound/pci/hda/patch_sigmatel.c
+++ b/trunk/sound/pci/hda/patch_sigmatel.c
@@ -1607,6 +1607,8 @@ static struct snd_pci_quirk stac92hd73xx_cfg_tbl[] = {
 				"Dell Studio 1555", STAC_DELL_M6_DMIC),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x02bd,
 				"Dell Studio 1557", STAC_DELL_M6_DMIC),
+	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x02fe,
+				"Dell Studio XPS 1645", STAC_DELL_M6_BOTH),
 	{} /* terminator */
 };