diff options
Diffstat (limited to 'sound/core/control.c')
| -rw-r--r-- | sound/core/control.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/sound/core/control.c b/sound/core/control.c index db51e4e64984..a08ad57c49b6 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -279,33 +279,31 @@ void snd_ctl_free_one(struct snd_kcontrol *kcontrol) EXPORT_SYMBOL(snd_ctl_free_one); -static unsigned int snd_ctl_hole_check(struct snd_card *card, - unsigned int count) +static bool snd_ctl_remove_numid_conflict(struct snd_card *card, + unsigned int count) { struct snd_kcontrol *kctl; list_for_each_entry(kctl, &card->controls, list) { - if ((kctl->id.numid <= card->last_numid && - kctl->id.numid + kctl->count > card->last_numid) || - (kctl->id.numid <= card->last_numid + count - 1 && - kctl->id.numid + kctl->count > card->last_numid + count - 1)) - return card->last_numid = kctl->id.numid + kctl->count - 1; + if (kctl->id.numid < card->last_numid + 1 + count && + kctl->id.numid + kctl->count > card->last_numid + 1) { + card->last_numid = kctl->id.numid + kctl->count - 1; + return true; + } } - return card->last_numid; + return false; } static int snd_ctl_find_hole(struct snd_card *card, unsigned int count) { - unsigned int last_numid, iter = 100000; + unsigned int iter = 100000; - last_numid = card->last_numid; - while (last_numid != snd_ctl_hole_check(card, count)) { + while (snd_ctl_remove_numid_conflict(card, count)) { if (--iter == 0) { /* this situation is very unlikely */ snd_printk(KERN_ERR "unable to allocate new control numid\n"); return -ENOMEM; } - last_numid = card->last_numid; } return 0; } |