diff options
| author | Takashi Iwai <tiwai@suse.de> | 2020-01-03 09:16:57 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-01-03 09:24:34 +0100 |
| commit | 195727e8b6a896d898b048e44fdf7ea52d36bd7e (patch) | |
| tree | 460195870919ceddca2ca25e6c8c1752100bd6a1 /sound/usb/mixer.c | |
| parent | 1aeb1c7f281ea7b372d5801fda119df73b1be98c (diff) | |
ALSA: usb: 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/20200103081714.9560-42-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/mixer.c')
| -rw-r--r-- | sound/usb/mixer.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index f60e0869c096..6d9080b47d0f 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -1445,7 +1445,7 @@ error: return 0; } -static struct snd_kcontrol_new usb_feature_unit_ctl = { +static const struct snd_kcontrol_new usb_feature_unit_ctl = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later manually */ .info = mixer_ctl_feature_info, @@ -1466,7 +1466,7 @@ static const struct snd_kcontrol_new usb_feature_unit_ctl_ro = { * A control which shows the boolean value from reading a UAC control on * the master channel. */ -static struct snd_kcontrol_new usb_bool_master_control_ctl_ro = { +static const struct snd_kcontrol_new usb_bool_master_control_ctl_ro = { .iface = SNDRV_CTL_ELEM_IFACE_CARD, .name = "", /* will be filled later manually */ .access = SNDRV_CTL_ELEM_ACCESS_READ, @@ -1488,7 +1488,7 @@ static const struct snd_kcontrol_new usb_connector_ctl_ro = { * This symbol is exported in order to allow the mixer quirks to * hook up to the standard feature unit control mechanism */ -struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl; +const struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl; /* * build a feature control |