ALSA: ice1724 - limit channels for multi-channel playback
Limit the available channels for multi-channel playback device to
the real number of channels. Until now, always up to 8 channels
are created, which are simply useless without the real outputs.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/ice1712/ice1724.c b/sound/pci/ice1712/ice1724.c
index 60119d2..7bb99df 100644
--- a/sound/pci/ice1712/ice1724.c
+++ b/sound/pci/ice1712/ice1724.c
@@ -942,7 +942,7 @@
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);
- int chs;
+ int chs, num_indeps;
runtime->private_data = (void *)&vt1724_playback_pro_reg;
ice->playback_pro_substream = substream;
@@ -952,7 +952,8 @@
set_rate_constraints(ice, substream);
mutex_lock(&ice->open_mutex);
/* calculate the currently available channels */
- for (chs = 0; chs < 3; chs++) {
+ num_indeps = ice->num_total_dacs / 2 - 1;
+ for (chs = 0; chs < num_indeps; chs++) {
if (ice->pcm_reserved[chs])
break;
}