[alsa-devel] [PATCH] ALSA: usb-audio: Fix memory leak in FTU quirk

[Takashi Iwai]

M-audio FastTrack Ultra quirk doesn't release the kzalloc'ed memory.
This patch adds the private_free callback to release it properly.

Cc: <stable at vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/usb/mixer_quirks.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 45203168ac6d..f6f8acf0446b 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -1021,6 +1021,7 @@ static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer,
 		return -ENOMEM;
 	}
 
+	kctl->private_free = usb_mixer_elem_free;
 	err = snd_ctl_add(mixer->chip->card, kctl);
 	if (err < 0)
 		return err;
-- 
2.1.3