aboutsummaryrefslogtreecommitdiffstats
path: root/sound
diff options
context:
space:
mode:
Diffstat (limited to 'sound')
-rw-r--r--sound/core/control.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/sound/core/control.c b/sound/core/control.c
index 9742bdba0de1..574745314e70 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -309,28 +309,29 @@ int snd_ctl_add(struct snd_card *card, struct snd_kcontrol *kcontrol)
309{ 309{
310 struct snd_ctl_elem_id id; 310 struct snd_ctl_elem_id id;
311 unsigned int idx; 311 unsigned int idx;
312 int err = -EINVAL;
312 313
313 snd_assert(card != NULL, return -EINVAL);
314 if (! kcontrol) 314 if (! kcontrol)
315 return -EINVAL; 315 return err;
316 snd_assert(kcontrol->info != NULL, return -EINVAL); 316 snd_assert(card != NULL, goto error);
317 snd_assert(kcontrol->info != NULL, goto error);
317 id = kcontrol->id; 318 id = kcontrol->id;
318 down_write(&card->controls_rwsem); 319 down_write(&card->controls_rwsem);
319 if (snd_ctl_find_id(card, &id)) { 320 if (snd_ctl_find_id(card, &id)) {
320 up_write(&card->controls_rwsem); 321 up_write(&card->controls_rwsem);
321 snd_ctl_free_one(kcontrol);
322 snd_printd(KERN_ERR "control %i:%i:%i:%s:%i is already present\n", 322 snd_printd(KERN_ERR "control %i:%i:%i:%s:%i is already present\n",
323 id.iface, 323 id.iface,
324 id.device, 324 id.device,
325 id.subdevice, 325 id.subdevice,
326 id.name, 326 id.name,
327 id.index); 327 id.index);
328 return -EBUSY; 328 err = -EBUSY;
329 goto error;
329 } 330 }
330 if (snd_ctl_find_hole(card, kcontrol->count) < 0) { 331 if (snd_ctl_find_hole(card, kcontrol->count) < 0) {
331 up_write(&card->controls_rwsem); 332 up_write(&card->controls_rwsem);
332 snd_ctl_free_one(kcontrol); 333 err = -ENOMEM;
333 return -ENOMEM; 334 goto error;
334 } 335 }
335 list_add_tail(&kcontrol->list, &card->controls); 336 list_add_tail(&kcontrol->list, &card->controls);
336 card->controls_count += kcontrol->count; 337 card->controls_count += kcontrol->count;
@@ -340,6 +341,10 @@ int snd_ctl_add(struct snd_card *card, struct snd_kcontrol *kcontrol)
340 for (idx = 0; idx < kcontrol->count; idx++, id.index++, id.numid++) 341 for (idx = 0; idx < kcontrol->count; idx++, id.index++, id.numid++)
341 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_ADD, &id); 342 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_ADD, &id);
342 return 0; 343 return 0;
344
345 error:
346 snd_ctl_free_one(kcontrol);
347 return err;
343} 348}
344 349
345/** 350/**