ALSA: sparc: 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/20200103081714.9560-40-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/sparc/amd7930.c b/sound/sparc/amd7930.c
index 916bed4..9d0da5f 100644 (file)
--- a/sound/sparc/amd7930.c
+++ b/sound/sparc/amd7930.c
@@ -837,7 +837,7 @@ static int snd_amd7930_put_volume(struct snd_kcontrol *kctl, struct snd_ctl_elem
        return change;
 }
 
-static struct snd_kcontrol_new amd7930_controls[] = {
+static const struct snd_kcontrol_new amd7930_controls[] = {
        {
                .iface          =       SNDRV_CTL_ELEM_IFACE_MIXER,
                .name           =       "Monitor Volume",

diff --git a/sound/sparc/cs4231.c b/sound/sparc/cs4231.c
index b0e5b4a..59f812b 100644 (file)
--- a/sound/sparc/cs4231.c
+++ b/sound/sparc/cs4231.c
@@ -1479,7 +1479,7 @@ static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
                   ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
 
-static struct snd_kcontrol_new snd_cs4231_controls[] = {
+static const struct snd_kcontrol_new snd_cs4231_controls[] = {
 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
                CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,

diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c
index 1390a52..aaa1493 100644 (file)
--- a/sound/sparc/dbri.c
+++ b/sound/sparc/dbri.c
@@ -2410,7 +2410,7 @@ static int snd_cs4215_put_single(struct snd_kcontrol *kcontrol,
   .private_value = (entry) | ((shift) << 8) | ((mask) << 16) | \
                        ((invert) << 24) },
 
-static struct snd_kcontrol_new dbri_controls[] = {
+static const struct snd_kcontrol_new dbri_controls[] = {
        {
         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
         .name  = "Playback Volume",