This unifies the code and data structure, and makes it easy to add more HDMI devices.
Signed-off-by: Wu Fengguang fengguang.wu@intel.com --- sound/pci/hda/hda_codec.c | 49 +++++++++++------------------------- 1 file changed, 16 insertions(+), 33 deletions(-)
--- sound-2.6.orig/sound/pci/hda/hda_codec.c 2009-10-15 10:16:52.000000000 +0800 +++ sound-2.6/sound/pci/hda/hda_codec.c 2009-10-15 10:17:00.000000000 +0800 @@ -2885,43 +2885,26 @@ static int get_empty_pcm_device(struct h static const char *dev_name[HDA_PCM_NTYPES] = { "Audio", "SPDIF", "HDMI", "Modem" }; - /* starting device index for each PCM type */ - static int dev_idx[HDA_PCM_NTYPES] = { - [HDA_PCM_TYPE_AUDIO] = 0, - [HDA_PCM_TYPE_SPDIF] = 1, - [HDA_PCM_TYPE_HDMI] = 3, - [HDA_PCM_TYPE_MODEM] = 6 + /* audio device indices; not linear to keep compatibility */ + static int audio_idx[HDA_PCM_NTYPES][5] = { + [HDA_PCM_TYPE_AUDIO] = { 0, 2, 4, 5, -1 }, + [HDA_PCM_TYPE_SPDIF] = { 1, -1 }, + [HDA_PCM_TYPE_HDMI] = { 3, -1 }, + [HDA_PCM_TYPE_MODEM] = { 6, -1 }, }; - /* normal audio device indices; not linear to keep compatibility */ - static int audio_idx[4] = { 0, 2, 4, 5 }; - int i, dev; - - switch (type) { - case HDA_PCM_TYPE_AUDIO: - for (i = 0; i < ARRAY_SIZE(audio_idx); i++) { - dev = audio_idx[i]; - if (!test_bit(dev, bus->pcm_dev_bits)) - goto ok; - } - snd_printk(KERN_WARNING "Too many audio devices\n"); - return -EAGAIN; - case HDA_PCM_TYPE_SPDIF: - case HDA_PCM_TYPE_HDMI: - case HDA_PCM_TYPE_MODEM: - dev = dev_idx[type]; - if (test_bit(dev, bus->pcm_dev_bits)) { - snd_printk(KERN_WARNING "%s already defined\n", - dev_name[type]); - return -EAGAIN; - } - break; - default: + int i; + + if (type >= HDA_PCM_NTYPES) { snd_printk(KERN_WARNING "Invalid PCM type %d\n", type); return -EINVAL; } - ok: - set_bit(dev, bus->pcm_dev_bits); - return dev; + + for (i = 0; audio_idx[type][i] >= 0 ; i++) + if (!test_and_set_bit(audio_idx[type][i], bus->pcm_dev_bits)) + return audio_idx[type][i]; + + snd_printk(KERN_WARNING "Too many %s devices\n", dev_name[type]); + return -EAGAIN; }
/*