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authorTakashi Iwai <tiwai@suse.de>2005-11-17 17:44:01 +0100
committerJaroslav Kysela <perex@suse.cz>2006-01-03 12:28:58 +0100
commit73e77ba0235532bd7523ba90883d325f6e095acf (patch)
treed22f29805ade9e78bd5f1802590d42f6e121c3c1 /sound/core/control.c
parent00a4e3d9f8df8a90966b75d517154718b4a2242a (diff)
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[ALSA] Add error messages
Add error messages in the critial error path to be more verbose. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/control.c')
-rw-r--r--sound/core/control.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/sound/core/control.c b/sound/core/control.c
index 03ae9bb7d38e..f8f98cc52417 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -195,8 +195,10 @@ struct snd_kcontrol *snd_ctl_new(struct snd_kcontrol *control, unsigned int acce
snd_assert(control != NULL, return NULL);
snd_assert(control->count > 0, return NULL);
kctl = kzalloc(sizeof(*kctl) + sizeof(struct snd_kcontrol_volatile) * control->count, GFP_KERNEL);
- if (kctl == NULL)
+ if (kctl == NULL) {
+ snd_printk(KERN_ERR "Cannot allocate control instance\n");
return NULL;
+ }
*kctl = *control;
for (idx = 0; idx < kctl->count; idx++)
kctl->vd[idx].access = access;
@@ -309,7 +311,9 @@ int snd_ctl_add(struct snd_card *card, struct snd_kcontrol *kcontrol)
struct snd_ctl_elem_id id;
unsigned int idx;
- snd_assert(card != NULL && kcontrol != NULL, return -EINVAL);
+ snd_assert(card != NULL, return -EINVAL);
+ if (! kcontrol)
+ return -EINVAL;
snd_assert(kcontrol->info != NULL, return -EINVAL);
id = kcontrol->id;
down_write(&card->controls_rwsem);