diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c
index fcad5ec31773df436d9416e37854a08ecc4d7a23..9446a5abea1314da3888ca586594010cabea4cc4 100644
--- a/sound/pci/hda/hda_eld.c
+++ b/sound/pci/hda/hda_eld.c
@@ -508,7 +508,7 @@ static void hdmi_write_eld_info(struct snd_info_entry *entry,
 	char name[64];
 	char *sname;
 	long long val;
-	int n;
+	unsigned int n;
 
 	while (!snd_info_get_line(buffer, line, sizeof(line))) {
 		if (sscanf(line, "%s %llx", name, &val) != 2)
@@ -539,7 +539,7 @@ static void hdmi_write_eld_info(struct snd_info_entry *entry,
 				sname++;
 				n = 10 * n + name[4] - '0';
 			}
-			if (n < 0 || n > 31) /* double the CEA limit */
+			if (n >= ELD_MAX_SAD)
 				continue;
 			if (!strcmp(sname, "_coding_type"))
 				e->sad[n].format = val;
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index c7e5de6e394ee9dcd22279bb30751b0f4aa12a6b..e5fbec37ffdd51beb60b9aa4ef63387aea936f60 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -1794,6 +1794,8 @@ static struct snd_pci_quirk stac92hd73xx_cfg_tbl[] = {
 				"Dell Studio 1537", STAC_DELL_M6_DMIC),
 	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x02a0,
 				"Dell Studio 17", STAC_DELL_M6_DMIC),
+	SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x02be,
+				"Dell Studio 1555", STAC_DELL_M6_DMIC),
 	{} /* terminator */
 };