[ALSA] dynamic minors (3/6): store device-specific object pointers dynamically
Instead of storing the pointers to the device-specific structures in an
array, put them into the struct snd_minor, and look them up dynamically.
This makes the device type modules independent of the minor number
encoding.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c
index 2dd6bf9b..2d7a420 100644
--- a/sound/core/oss/mixer_oss.c
+++ b/sound/core/oss/mixer_oss.c
@@ -41,12 +41,13 @@
static int snd_mixer_oss_open(struct inode *inode, struct file *file)
{
- int cardnum = SNDRV_MINOR_OSS_CARD(iminor(inode));
struct snd_card *card;
struct snd_mixer_oss_file *fmixer;
int err;
- if ((card = snd_cards[cardnum]) == NULL)
+ card = snd_lookup_oss_minor_data(iminor(inode),
+ SNDRV_OSS_DEVICE_TYPE_MIXER);
+ if (card == NULL)
return -ENODEV;
if (card->mixer_oss == NULL)
return -ENODEV;
@@ -1286,7 +1287,7 @@
sprintf(name, "mixer%i%i", card->number, 0);
if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
card, 0,
- &snd_mixer_oss_f_ops,
+ &snd_mixer_oss_f_ops, card,
name)) < 0) {
snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
card->number, 0);
