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Commit f67d71ae authored by Geliang Tang's avatar Geliang Tang Committed by Takashi Iwai
Browse files

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: default avatarGeliang Tang <geliangtang@163.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent cb41f271

sound/usb/stream.c

+2 −4
Original line number Diff line number Diff line
@@ -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;