ALSA: aoa: Constify snd_kcontrol_new items
Most of snd_kcontrol_new definitions are read-only and passed as-is.
Let's declare them as const for further optimization.
There should be no functional changes by this patch.
Link: https://lore.kernel.org/r/20200103081714.9560-33-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/aoa/codecs/tas.c b/sound/aoa/codecs/tas.c
index c60b783..d3e3757 100644
--- a/sound/aoa/codecs/tas.c
+++ b/sound/aoa/codecs/tas.c
@@ -369,7 +369,7 @@ static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol,
}
#define MIXER_CONTROL(n,descr,idx) \
-static struct snd_kcontrol_new n##_control = { \
+static const struct snd_kcontrol_new n##_control = { \
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
.name = descr " Playback Volume", \
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE, \