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ALSA: hda: 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/20200103081714.9560-37-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2020-01-03 09:16:52 +01:00
parent fdd1f6fd32
commit 35ace5e841
2 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sound/pci/hda/hda_codec.c
View File

@ -2387,7 +2387,7 @@ static int snd_hda_spdif_out_switch_put(struct snd_kcontrol *kcontrol,
return change;
}
static struct snd_kcontrol_new dig_mixes[] = {
static const struct snd_kcontrol_new dig_mixes[] = {
{
.access = SNDRV_CTL_ELEM_ACCESS_READ,
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
@ -2437,7 +2437,7 @@ int snd_hda_create_dig_out_ctls(struct hda_codec *codec,
{
int err;
struct snd_kcontrol *kctl;
struct snd_kcontrol_new *dig_mix;
const struct snd_kcontrol_new *dig_mix;
int idx = 0;
int val = 0;
const int spdif_index = 16;
@ -2655,7 +2655,7 @@ static int snd_hda_spdif_in_status_get(struct snd_kcontrol *kcontrol,
return 0;
}
static struct snd_kcontrol_new dig_in_ctls[] = {
static const struct snd_kcontrol_new dig_in_ctls[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, SWITCH),
@ -2687,7 +2687,7 @@ int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid)
{
int err;
struct snd_kcontrol *kctl;
struct snd_kcontrol_new *dig_mix;
const struct snd_kcontrol_new *dig_mix;
int idx;
idx = find_empty_mixer_ctl_idx(codec, "IEC958 Capture Switch", 0);

6
sound/pci/hda/patch_sigmatel.c
View File

@ -825,11 +825,11 @@ static int stac_auto_create_beep_ctls(struct hda_codec *codec,
struct sigmatel_spec *spec = codec->spec;
u32 caps = query_amp_caps(codec, nid, HDA_OUTPUT);
struct snd_kcontrol_new *knew;
static struct snd_kcontrol_new abeep_mute_ctl =
static const struct snd_kcontrol_new abeep_mute_ctl =
HDA_CODEC_MUTE(NULL, 0, 0, 0);
static struct snd_kcontrol_new dbeep_mute_ctl =
static const struct snd_kcontrol_new dbeep_mute_ctl =
HDA_CODEC_MUTE_BEEP(NULL, 0, 0, 0);
static struct snd_kcontrol_new beep_vol_ctl =
static const struct snd_kcontrol_new beep_vol_ctl =
HDA_CODEC_VOLUME(NULL, 0, 0, 0);
/* check for mute support for the the amp */