ALSA: hda - Supports more audio streams
So far, the driver supports up to 10 streams. This is a restriction in
hda_intel.c and hda_codec.c: in the former, the fixed array size limits
the amount, and in the latter, the fixed device-number assignment table
(in get_empty_pcm_device()) limits the possibility.
This patch reduces the restriction by
- using linked list for managing PCM instances in hda_intel.c, and
- assigning non-fixed device numbers for the extra devices
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 4562e9d..4463f9a 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -3850,6 +3850,12 @@
if (!test_and_set_bit(audio_idx[type][i], bus->pcm_dev_bits))
return audio_idx[type][i];
+ /* non-fixed slots starting from 10 */
+ for (i = 10; i < 32; i++) {
+ if (!test_and_set_bit(i, bus->pcm_dev_bits))
+ return i;
+ }
+
snd_printk(KERN_WARNING "Too many %s devices\n",
snd_hda_pcm_type_name[type]);
return -EAGAIN;