ALSA: pci: 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/20200103081714.9560-38-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/azt3328.c b/sound/pci/azt3328.c
index 898ba55..7374535 100644
--- a/sound/pci/azt3328.c
+++ b/sound/pci/azt3328.c
@@ -1094,7 +1094,7 @@ snd_azf3328_put_mixer_enum(struct snd_kcontrol *kcontrol,
return (nreg != oreg);
}
-static struct snd_kcontrol_new snd_azf3328_mixer_controls[] = {
+static const struct snd_kcontrol_new snd_azf3328_mixer_controls[] = {
AZF3328_MIXER_SWITCH("Master Playback Switch", IDX_MIXER_PLAY_MASTER, 15, 1),
AZF3328_MIXER_VOL_STEREO("Master Playback Volume", IDX_MIXER_PLAY_MASTER, 0x1f, 1),
AZF3328_MIXER_SWITCH("PCM Playback Switch", IDX_MIXER_WAVEOUT, 15, 1),