amixer: fix the verbose compilation warnings for latest gcc

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/amixer/amixer.c b/amixer/amixer.c
index d7ef9409f06e56bbbd4d3fdcb253ecddec9e2bd9..1a49d4895e0977d7574c2975dc340909811a6d4c 100644 (file)
--- a/amixer/amixer.c
+++ b/amixer/amixer.c
@@ -241,14 +241,14 @@ static int set_capture_dB(snd_mixer_elem_t *elem,
 
 static int set_playback_raw_volume(snd_mixer_elem_t *elem,
                                   snd_mixer_selem_channel_id_t c,
-                                  long value, int dir)
+                                  long value, int dir ATTRIBUTE_UNUSED)
 {
        return snd_mixer_selem_set_playback_volume(elem, c, value);
 }
 
 static int set_capture_raw_volume(snd_mixer_elem_t *elem,
                                  snd_mixer_selem_channel_id_t c,
-                                 long value, int dir)
+                                 long value, int dir ATTRIBUTE_UNUSED)
 {
        return snd_mixer_selem_set_capture_volume(elem, c, value);
 }
@@ -256,7 +256,7 @@ static int set_capture_raw_volume(snd_mixer_elem_t *elem,
 /* FIXME: normalize to int32 space to be compatible with other types */
 #define MAP_VOL_RES    (INT32_MAX / 100)
 
-static int get_mapped_volume_range(snd_mixer_elem_t *elem,
+static int get_mapped_volume_range(snd_mixer_elem_t *elem ATTRIBUTE_UNUSED,
                                   long *pmin, long *pmax)
 {
        *pmin = 0;
@@ -1573,8 +1573,8 @@ static void events_add(snd_hctl_elem_t *helem)
        snd_hctl_elem_set_callback(helem, element_callback);
 }
 
-static int ctl_callback(snd_hctl_t *ctl, unsigned int mask,
-                snd_hctl_elem_t *elem)
+static int ctl_callback(snd_hctl_t *ctl ATTRIBUTE_UNUSED, unsigned int mask,
+                       snd_hctl_elem_t *elem)
 {
        if (mask & SND_CTL_EVENT_MASK_ADD)
                events_add(elem);
@@ -1653,8 +1653,8 @@ static void sevents_add(snd_mixer_elem_t *elem)
        snd_mixer_elem_set_callback(elem, melem_event);
 }
 
-static int mixer_event(snd_mixer_t *mixer, unsigned int mask,
-               snd_mixer_elem_t *elem)
+static int mixer_event(snd_mixer_t *mixer ATTRIBUTE_UNUSED, unsigned int mask,
+                      snd_mixer_elem_t *elem)
 {
        if (mask & SND_CTL_EVENT_MASK_ADD)
                sevents_add(elem);