diff --git a/sound/usb/format.c b/sound/usb/format.c
index e831ee4238bbd79b2761c942dd900d2623f0912d..b30d6fb89b406a23b53850f8320a4796da4cc2d3 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -43,7 +43,7 @@
  */
 static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
 				     struct audioformat *fp,
-				     int format, void *_fmt,
+				     unsigned int format, void *_fmt,
 				     int protocol)
 {
 	int sample_width, sample_bytes;
@@ -353,7 +353,7 @@ static int parse_audio_format_rates_v2(struct snd_usb_audio *chip,
  * parse the format type I and III descriptors
  */
 static int parse_audio_format_i(struct snd_usb_audio *chip,
-				struct audioformat *fp, int format,
+				struct audioformat *fp, unsigned int format,
 				struct uac_format_type_i_continuous_descriptor *fmt,
 				struct usb_host_interface *iface)
 {
@@ -473,8 +473,9 @@ static int parse_audio_format_ii(struct snd_usb_audio *chip,
 	return ret;
 }
 
-int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
-			       int format, struct uac_format_type_i_continuous_descriptor *fmt,
+int snd_usb_parse_audio_format(struct snd_usb_audio *chip,
+			       struct audioformat *fp, unsigned int format,
+			       struct uac_format_type_i_continuous_descriptor *fmt,
 			       int stream, struct usb_host_interface *iface)
 {
 	int err;
diff --git a/sound/usb/format.h b/sound/usb/format.h
index 387924f0af85de9b419440b2c043b8b9faa1a8de..6f315226f32042ea95881766d42aedfc26cf9f66 100644
--- a/sound/usb/format.h
+++ b/sound/usb/format.h
@@ -2,7 +2,7 @@
 #define __USBAUDIO_FORMAT_H
 
 int snd_usb_parse_audio_format(struct snd_usb_audio *chip,
-			       struct audioformat *fp, int format,
+			       struct audioformat *fp, unsigned int format,
 			       struct uac_format_type_i_continuous_descriptor *fmt,
 			       int stream, struct usb_host_interface *iface);
 
diff --git a/sound/usb/stream.c b/sound/usb/stream.c
index ad181d538bd9658edd79fec07d2fae125c9ebd38..ad0704656fe53bd0875271fd306f815a2ba48b65 100644
--- a/sound/usb/stream.c
+++ b/sound/usb/stream.c
@@ -463,7 +463,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no)
 	struct usb_host_interface *alts;
 	struct usb_interface_descriptor *altsd;
 	int i, altno, err, stream;
-	int format = 0, num_channels = 0;
+	unsigned int format = 0, num_channels = 0;
 	struct audioformat *fp = NULL;
 	int num, protocol, clock = 0;
 	struct uac_format_type_i_continuous_descriptor *fmt;