[RFC PATCH 02/17] ALSA: pcm: Honor subformat when configuring substream

[Cezary Rojewski <cezary.rojewski@intel.com>]

Substream value is currently hardcoded to SNDRV_PCM_SUBFORMAT_STD.
Update the constraint procedure so that subformat selection is not
ignored.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/core/pcm_native.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 39a65d1415ab..cb2745f80af3 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -2618,6 +2618,8 @@ static int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
 	int err;
 	unsigned int mask = 0;
 
+	/* All PCMs support at least the default STD subformat. */
+	hw->subformats |= PARAM_MASK_BIT(SNDRV_PCM_SUBFORMAT_STD);
         if (hw->info & SNDRV_PCM_INFO_INTERLEAVED)
 		mask |= PARAM_MASK_BIT(SNDRV_PCM_ACCESS_RW_INTERLEAVED);
         if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED)
@@ -2638,8 +2640,7 @@ static int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
 	if (err < 0)
 		return err;
 
-	err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT,
-					 PARAM_MASK_BIT(SNDRV_PCM_SUBFORMAT_STD));
+	err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, hw->subformats);
 	if (err < 0)
 		return err;
 
-- 
2.25.1