diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c
index 40ccb419b6e9..b36919c0d363 100644
--- a/sound/pci/hda/hda_hwdep.c
+++ b/sound/pci/hda/hda_hwdep.c
@@ -293,8 +293,11 @@ static ssize_t type##_store(struct device *dev,			\
 {								\
 	struct snd_hwdep *hwdep = dev_get_drvdata(dev);		\
 	struct hda_codec *codec = hwdep->private_data;		\
-	char *after;						\
-	codec->type = simple_strtoul(buf, &after, 0);		\
+	unsigned long val;					\
+	int err = strict_strtoul(buf, 0, &val);			\
+	if (err < 0)						\
+		return err;					\
+	codec->type = val;					\
 	return count;						\
 }
 
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index dc1d9f124578..e28c810bc00c 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -4159,43 +4159,47 @@ static void stac92xx_power_down(struct hda_codec *codec)
 static void stac_toggle_power_map(struct hda_codec *codec, hda_nid_t nid,
 				  int enable);
 
+static inline int get_int_hint(struct hda_codec *codec, const char *key,
+			       int *valp)
+{
+	const char *p;
+	p = snd_hda_get_hint(codec, key);
+	if (p) {
+		unsigned long val;
+		if (!strict_strtoul(p, 0, &val)) {
+			*valp = val;
+			return 1;
+		}
+	}
+	return 0;
+}
+
 /* override some hints from the hwdep entry */
 static void stac_store_hints(struct hda_codec *codec)
 {
 	struct sigmatel_spec *spec = codec->spec;
-	const char *p;
 	int val;
 
 	val = snd_hda_get_bool_hint(codec, "hp_detect");
 	if (val >= 0)
 		spec->hp_detect = val;
-	p = snd_hda_get_hint(codec, "gpio_mask");
-	if (p) {
-		spec->gpio_mask = simple_strtoul(p, NULL, 0);
+	if (get_int_hint(codec, "gpio_mask", &spec->gpio_mask)) {
 		spec->eapd_mask = spec->gpio_dir = spec->gpio_data =
 			spec->gpio_mask;
 	}
-	p = snd_hda_get_hint(codec, "gpio_dir");
-	if (p)
-		spec->gpio_dir = simple_strtoul(p, NULL, 0) & spec->gpio_mask;
-	p = snd_hda_get_hint(codec, "gpio_data");
-	if (p)
-		spec->gpio_data = simple_strtoul(p, NULL, 0) & spec->gpio_mask;
-	p = snd_hda_get_hint(codec, "eapd_mask");
-	if (p)
-		spec->eapd_mask = simple_strtoul(p, NULL, 0) & spec->gpio_mask;
-	p = snd_hda_get_hint(codec, "gpio_mute");
-	if (p)
-		spec->gpio_mute = simple_strtoul(p, NULL, 0) & spec->gpio_mask;
+	if (get_int_hint(codec, "gpio_dir", &spec->gpio_dir))
+		spec->gpio_mask &= spec->gpio_mask;
+	if (get_int_hint(codec, "gpio_data", &spec->gpio_data))
+		spec->gpio_dir &= spec->gpio_mask;
+	if (get_int_hint(codec, "eapd_mask", &spec->eapd_mask))
+		spec->eapd_mask &= spec->gpio_mask;
+	if (get_int_hint(codec, "gpio_mute", &spec->gpio_mute))
+		spec->gpio_mute &= spec->gpio_mask;
 	val = snd_hda_get_bool_hint(codec, "eapd_switch");
 	if (val >= 0)
 		spec->eapd_switch = val;
-	p = snd_hda_get_hint(codec, "gpio_led_polarity");
-	if (p)
-		spec->gpio_led_polarity = simple_strtoul(p, NULL, 0);
-	p = snd_hda_get_hint(codec, "gpio_led");
-	if (p) {
-		spec->gpio_led = simple_strtoul(p, NULL, 0);
+	get_int_hint(codec, "gpio_led_polarity", &spec->gpio_led_polarity);
+	if (get_int_hint(codec, "gpio_led", &spec->gpio_led)) {
 		spec->gpio_mask |= spec->gpio_led;
 		spec->gpio_dir |= spec->gpio_led;
 		if (spec->gpio_led_polarity)