From 8c558076c740e8009a96c6fdc3d4245dde62be77 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 3 May 2018 12:33:32 +0200 Subject: ALSA: usb-audio: Clean up mixer element list traverse Introduce a new macro for iterating over mixer element list for avoiding the open codes in many places. Also the open-coded container_of() and the forced cast to struct usb_mixer_elem_info are replaced with another simple macro, too. No functional changes but just readability improvement. Signed-off-by: Takashi Iwai --- sound/usb/mixer_quirks.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/usb/mixer_quirks.c') diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index 4377374affd3..1b94387e18b6 100644 --- a/sound/usb/mixer_quirks.c +++ b/sound/usb/mixer_quirks.c @@ -1172,7 +1172,7 @@ void snd_emuusb_set_samplerate(struct snd_usb_audio *chip, int unitid = 12; /* SamleRate ExtensionUnit ID */ list_for_each_entry(mixer, &chip->mixer_list, list) { - cval = (struct usb_mixer_elem_info *)mixer->id_elems[unitid]; + cval = mixer_elem_list_to_info(mixer->id_elems[unitid]); if (cval) { snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, cval->control << 8, -- cgit v1.2.1