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ALSA: control: clean up snd_ctl_hole_check()

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The return value of snd_ctl_hole_check() is used only to detect whether
to continue the loop in snd_ctl_find_hole() or not, so we can simplify
the code by changing this return type to a boolean.  Also rename this
function to better show what it actually does.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Clemens Ladisch 2011-03-07 13:24:30 +01:00 committed by Takashi Iwai
parent 7c73358771
commit 0e82e5fa97
1 changed files with 9 additions and 9 deletions
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18
sound/core/control.c
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@ -279,31 +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 + 1 + count &&
kctl->id.numid + kctl->count > card->last_numid + 1)
return card->last_numid = kctl->id.numid + kctl->count - 1;
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;
}