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ALSA: spi: 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.

There should be no functional changes by this patch.

Link: https://lore.kernel.org/r/20200103081714.9560-41-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2020-01-03 09:16:56 +01:00
parent f8a32d94f3
commit 1aeb1c7f28
1 changed files with 1 additions and 1 deletions
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sound/spi/at73c213.c
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@ -657,7 +657,7 @@ static int snd_at73c213_aux_capture_volume_info(
| (mask << 24) | (invert << 22)) \ | (mask << 24) | (invert << 22)) \
} }
static struct snd_kcontrol_new snd_at73c213_controls[] = { static const struct snd_kcontrol_new snd_at73c213_controls[] = {
AT73C213_STEREO("Master Playback Volume", 0, DAC_LMPG, DAC_RMPG, 0, 0, 0x1f, 1), AT73C213_STEREO("Master Playback Volume", 0, DAC_LMPG, DAC_RMPG, 0, 0, 0x1f, 1),
AT73C213_STEREO("Master Playback Switch", 0, DAC_LMPG, DAC_RMPG, 5, 5, 1, 1), AT73C213_STEREO("Master Playback Switch", 0, DAC_LMPG, DAC_RMPG, 5, 5, 1, 1),
AT73C213_STEREO("PCM Playback Volume", 0, DAC_LLOG, DAC_RLOG, 0, 0, 0x1f, 1), AT73C213_STEREO("PCM Playback Volume", 0, DAC_LLOG, DAC_RLOG, 0, 0, 0x1f, 1),