diff options
Diffstat (limited to 'sound/core/pcm_lib.c')
| -rw-r--r-- | sound/core/pcm_lib.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index 446c00bd908b..ffd656012ab8 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -1384,8 +1384,14 @@ static int snd_pcm_hw_rule_msbits(struct snd_pcm_hw_params *params, int width = l & 0xffff; unsigned int msbits = l >> 16; struct snd_interval *i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); - if (snd_interval_single(i) && snd_interval_value(i) == width) - params->msbits = msbits; + + if (!snd_interval_single(i)) + return 0; + + if ((snd_interval_value(i) == width) || + (width == 0 && snd_interval_value(i) > msbits)) + params->msbits = min_not_zero(params->msbits, msbits); + return 0; } @@ -1396,6 +1402,11 @@ static int snd_pcm_hw_rule_msbits(struct snd_pcm_hw_params *params, * @width: sample bits width * @msbits: msbits width * + * This constraint will set the number of most significant bits (msbits) if a + * sample format with the specified width has been select. If width is set to 0 + * the msbits will be set for any sample format with a width larger than the + * specified msbits. + * * Return: Zero if successful, or a negative error code on failure. */ int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime, |