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ALSA: pcm: use helper function to refer parameter as read-only

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ALSA pcm core has hw_param_interval_c() to pick up parameter with const
qualifier for safe programming.

This commit applies it to the cases.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto
2017-05-17 08:48:20 +09:00
committed by Takashi Iwai
parent 8b674308a2
commit b55f9fdcd3
4 changed files with 10 additions and 8 deletions
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4
sound/core/oss/pcm_oss.c
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@@ -799,7 +799,7 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
static int choose_rate(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, unsigned int best_rate)
{
struct snd_interval *it;
const struct snd_interval *it;
struct snd_pcm_hw_params *save;
unsigned int rate, prev;
@@ -807,7 +807,7 @@ static int choose_rate(struct snd_pcm_substream *substream,
if (save == NULL)
return -ENOMEM;
*save = *params;
it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE);
it = hw_param_interval_c(save, SNDRV_PCM_HW_PARAM_RATE);
/* try multiples of the best rate */
rate = best_rate;