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| author | Geliang Tang <geliangtang@163.com> | 2015-12-21 23:55:39 +0800 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-12-22 10:58:28 +0100 |
| commit | f67d71ae8bb18137eb1909a588879b33e06cc4c4 (patch) | |
| tree | 592ec8f86af441c3153d263f96feb43494efe42a /sound/usb | |
| parent | cb41f271d01b7c985ab47ea26fdef531a6237561 (diff) | |
| download | linux-f67d71ae8bb18137eb1909a588879b33e06cc4c4.tar.gz linux-f67d71ae8bb18137eb1909a588879b33e06cc4c4.tar.bz2 linux-f67d71ae8bb18137eb1909a588879b33e06cc4c4.zip | |
ALSA: usb-audio: use list_for_each_entry_continue_reverse
For better readability, use list_for_each_entry_continue_reverse()
in have_dup_chmap().
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/stream.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/sound/usb/stream.c b/sound/usb/stream.c index 8ee14f2365e7..c4dc577ab1bd 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -125,11 +125,9 @@ static int usb_chmap_ctl_info(struct snd_kcontrol *kcontrol, static bool have_dup_chmap(struct snd_usb_substream *subs, struct audioformat *fp) { - struct list_head *p; + struct audioformat *prev = fp; - for (p = fp->list.prev; p != &subs->fmt_list; p = p->prev) { - struct audioformat *prev; - prev = list_entry(p, struct audioformat, list); + list_for_each_entry_continue_reverse(prev, &subs->fmt_list, list) { if (prev->chmap && !memcmp(prev->chmap, fp->chmap, sizeof(*fp->chmap))) return true; |