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ALSA: usb: Constify snd_pcm_hardware definitions

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Most of snd_pcm_hardware definitions are just copied to another object
as-is, hence we can define them as const for further optimization.

There should be no functional changes by this patch.

Link: https://lore.kernel.org/r/20200103081714.9560-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2020-01-03 09:16:18 +01:00
parent c1c3981fa1
commit 2ead9d087f
3 changed files with 3 additions and 3 deletions
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2
sound/usb/caiaq/audio.c
View File

@ -30,7 +30,7 @@
#define MAKE_CHECKBYTE(cdev,stream,i) \
(stream << 1) | (~(i / (cdev->n_streams * BYTES_PER_SAMPLE_USB)) & 1)
static struct snd_pcm_hardware snd_usb_caiaq_pcm_hardware = {
static const struct snd_pcm_hardware snd_usb_caiaq_pcm_hardware = {
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER),
.formats = SNDRV_PCM_FMTBIT_S24_3BE,

2
sound/usb/usx2y/usbusx2yaudio.c
View File

@ -838,7 +838,7 @@ static int snd_usX2Y_pcm_prepare(struct snd_pcm_substream *substream)
return err;
}
static struct snd_pcm_hardware snd_usX2Y_2c =
static const struct snd_pcm_hardware snd_usX2Y_2c =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |

2
sound/usb/usx2y/usx2yhwdeppcm.c
View File

@ -528,7 +528,7 @@ static int snd_usX2Y_usbpcm_prepare(struct snd_pcm_substream *substream)
return err;
}
static struct snd_pcm_hardware snd_usX2Y_4c =
static const struct snd_pcm_hardware snd_usX2Y_4c =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |