diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index a82412b..a756950 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -859,10 +859,8 @@
 		usb_free_urb(u->urb);
 		u->urb = NULL;
 	}
-	if (u->buf) {
-		kfree(u->buf);
-		u->buf = NULL;
-	}
+	kfree(u->buf);
+	u->buf = NULL;
 }
 
 /*
@@ -880,10 +878,8 @@
 		release_urb_ctx(&subs->dataurb[i]);
 	for (i = 0; i < SYNC_URBS; i++)
 		release_urb_ctx(&subs->syncurb[i]);
-	if (subs->tmpbuf) {
-		kfree(subs->tmpbuf);
-		subs->tmpbuf = NULL;
-	}
+	kfree(subs->tmpbuf);
+	subs->tmpbuf = NULL;
 	subs->nurbs = 0;
 }
 
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index 83ba665..e73c1c9 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -623,10 +623,8 @@
 /* private_free callback */
 static void usb_mixer_elem_free(snd_kcontrol_t *kctl)
 {
-	if (kctl->private_data) {
-		kfree(kctl->private_data);
-		kctl->private_data = NULL;
-	}
+	kfree(kctl->private_data);
+	kctl->private_data = NULL;
 }
 
 
diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c
index 4c292e0..62dfd28 100644
--- a/sound/usb/usx2y/usbusx2yaudio.c
+++ b/sound/usb/usx2y/usbusx2yaudio.c
@@ -401,10 +401,8 @@
 	for (i = 0; i < NRURBS; i++)
 		usX2Y_urb_release(subs->urb + i, subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]);
 
-	if (subs->tmpbuf) {
-		kfree(subs->tmpbuf);
-		subs->tmpbuf = NULL;
-	}
+	kfree(subs->tmpbuf);
+	subs->tmpbuf = NULL;
 }
 /*
  * initialize a substream's urbs