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>

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 2e4a9dbc51faeca29529da8d231d779a10b92aed..63a8adb1705ea06a0a038ea5bf6601f98341deec 100644 (file)
--- 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");