From: Jorge Sanjuan <jorge.sanjuan@codethink.co.uk>
Date: Thu, 14 Jun 2018 14:05:58 +0000 (+0100)
Subject: ALSA: usb-audio: Always create the interrupt pipe for the mixer
X-Git-Tag: v4.18-rc1~15^2
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=ad6baae6238136d9380ba95aa1646ab8b2fa52f5;p=linux.git

ALSA: usb-audio: Always create the interrupt pipe for the mixer

An UAC3 BADD device may also include an interrupt status pipe
to report changes on the HEADSET ADAPTER terminals. The creation
of the status pipe is dependent on the device reporting that it
has it.

Signed-off-by: Jorge Sanjuan <jorge.sanjuan@codethink.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 03b8a2ac93c8..b1dcf6dfc27e 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -3338,10 +3338,12 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
 		err = snd_usb_mixer_controls(mixer);
 		if (err < 0)
 			goto _error;
-		err = snd_usb_mixer_status_create(mixer);
-		if (err < 0)
-			goto _error;
 	}
+
+	err = snd_usb_mixer_status_create(mixer);
+	if (err < 0)
+		goto _error;
+
 	err = create_keep_iface_ctl(mixer);
 	if (err < 0)
 		goto _error;