ALSA: snd-usb: drop unused varible assigments

Don't assign 'len' in cases where we don't make use of the returned value.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 4 insertions, 5 deletions

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 2e4a9dbc51fa..63a8adb1705e 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1290,9 +1290,8 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
                                                     kctl->id.name,
                                                     sizeof(kctl->id.name), 1);
                         if (!len)
-                                len = snprintf(kctl->id.name,
-                                               sizeof(kctl->id.name),
-                                               "Feature %d", unitid);
+                                snprintf(kctl->id.name, sizeof(kctl->id.name),
+                                         "Feature %d", unitid);
                 }
 
                 if (!mapped_name)
@@ -1305,9 +1304,9 @@ static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
                  */
                 if (!mapped_name && !(state->oterm.type >> 16)) {
                         if ((state->oterm.type & 0xff00) == 0x0100)
-                                len = append_ctl_name(kctl, " Capture");
+                                append_ctl_name(kctl, " Capture");
                         else
-                                len = append_ctl_name(kctl, " Playback");
+                                append_ctl_name(kctl, " Playback");
                 }
                 append_ctl_name(kctl, control == UAC_FU_MUTE ?
                                 " Switch" : " Volume");