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ALSA: drivers: Constify snd_kcontrol_new items

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Most of snd_kcontrol_new definitions are read-only and passed as-is.
Let's declare them as const for further optimization.
Constify snd_kcontrol_new items

There should be no functional changes by this patch.

Link: https://lore.kernel.org/r/20200103081714.9560-34-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2020-01-03 09:16:49 +01:00
parent dde5199c98
commit 2eccd40803
5 changed files with 13 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/drivers/aloop.c
View File

@ -1496,7 +1496,7 @@ static int loopback_channels_get(struct snd_kcontrol *kcontrol,
return 0;
}
static struct snd_kcontrol_new loopback_controls[] = {
static const struct snd_kcontrol_new loopback_controls[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "PCM Rate Shift 100000",

2
sound/drivers/dummy.c
View File

@ -849,7 +849,7 @@ static int snd_dummy_iobox_put(struct snd_kcontrol *kcontrol,
return changed;
}
static struct snd_kcontrol_new snd_dummy_controls[] = {
static const struct snd_kcontrol_new snd_dummy_controls[] = {
DUMMY_VOLUME("Master Volume", 0, MIXER_ADDR_MASTER),
DUMMY_CAPSRC("Master Capture Switch", 0, MIXER_ADDR_MASTER),
DUMMY_VOLUME("Synth Volume", 0, MIXER_ADDR_SYNTH),

14
sound/drivers/mts64.c
View File

@ -467,7 +467,7 @@ __out:
return changed;
}
static struct snd_kcontrol_new mts64_ctl_smpte_switch = {
static const struct snd_kcontrol_new mts64_ctl_smpte_switch = {
.iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
.name = "SMPTE Playback Switch",
.index = 0,
@ -540,7 +540,7 @@ static int snd_mts64_ctl_smpte_time_put(struct snd_kcontrol *kctl,
return changed;
}
static struct snd_kcontrol_new mts64_ctl_smpte_time_hours = {
static const struct snd_kcontrol_new mts64_ctl_smpte_time_hours = {
.iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
.name = "SMPTE Time Hours",
.index = 0,
@ -551,7 +551,7 @@ static struct snd_kcontrol_new mts64_ctl_smpte_time_hours = {
.put = snd_mts64_ctl_smpte_time_put
};
static struct snd_kcontrol_new mts64_ctl_smpte_time_minutes = {
static const struct snd_kcontrol_new mts64_ctl_smpte_time_minutes = {
.iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
.name = "SMPTE Time Minutes",
.index = 0,
@ -562,7 +562,7 @@ static struct snd_kcontrol_new mts64_ctl_smpte_time_minutes = {
.put = snd_mts64_ctl_smpte_time_put
};
static struct snd_kcontrol_new mts64_ctl_smpte_time_seconds = {
static const struct snd_kcontrol_new mts64_ctl_smpte_time_seconds = {
.iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
.name = "SMPTE Time Seconds",
.index = 0,
@ -573,7 +573,7 @@ static struct snd_kcontrol_new mts64_ctl_smpte_time_seconds = {
.put = snd_mts64_ctl_smpte_time_put
};
static struct snd_kcontrol_new mts64_ctl_smpte_time_frames = {
static const struct snd_kcontrol_new mts64_ctl_smpte_time_frames = {
.iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
.name = "SMPTE Time Frames",
.index = 0,
@ -625,7 +625,7 @@ static int snd_mts64_ctl_smpte_fps_put(struct snd_kcontrol *kctl,
return changed;
}
static struct snd_kcontrol_new mts64_ctl_smpte_fps = {
static const struct snd_kcontrol_new mts64_ctl_smpte_fps = {
.iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
.name = "SMPTE Fps",
.index = 0,
@ -641,7 +641,7 @@ static int snd_mts64_ctl_create(struct snd_card *card,
struct mts64 *mts)
{
int err, i;
static struct snd_kcontrol_new *control[] = {
static const struct snd_kcontrol_new *control[] = {
&mts64_ctl_smpte_switch,
&mts64_ctl_smpte_time_hours,
&mts64_ctl_smpte_time_minutes,

2
sound/drivers/opl4/opl4_mixer.c
View File

@ -47,7 +47,7 @@ static int snd_opl4_ctl_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_v
return value != old_value;
}
static struct snd_kcontrol_new snd_opl4_controls[] = {
static const struct snd_kcontrol_new snd_opl4_controls[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "FM Playback Volume",

6
sound/drivers/pcsp/pcsp_mixer.c
View File

@ -120,17 +120,17 @@ static int pcsp_pcspkr_put(struct snd_kcontrol *kcontrol,
.put = pcsp_##ctl_type##_put, \
}
static struct snd_kcontrol_new snd_pcsp_controls_pcm[] = {
static const struct snd_kcontrol_new snd_pcsp_controls_pcm[] = {
PCSP_MIXER_CONTROL(enable, "Master Playback Switch"),
PCSP_MIXER_CONTROL(treble, "BaseFRQ Playback Volume"),
};
static struct snd_kcontrol_new snd_pcsp_controls_spkr[] = {
static const struct snd_kcontrol_new snd_pcsp_controls_spkr[] = {
PCSP_MIXER_CONTROL(pcspkr, "Beep Playback Switch"),
};
static int snd_pcsp_ctls_add(struct snd_pcsp *chip,
struct snd_kcontrol_new *ctls, int num)
const struct snd_kcontrol_new *ctls, int num)
{
int i, err;
struct snd_card *card = chip->card;