From: Takashi Iwai <tiwai@xxxxxxx>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit 1a290581ded60e87276741f8ca97b161d2b226fc upstream.
M-audio FastTrack Ultra quirk doesn't release the kzalloc'ed memory.
This patch adds the private_free callback to release it properly.
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
sound/usb/mixer_quirks.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index d42a584cf829..ea4b9a8a90bd 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -802,6 +802,11 @@ static int snd_ftu_eff_switch_put(struct snd_kcontrol *kctl,
return changed;
}
+static void kctl_private_value_free(struct snd_kcontrol *kctl)
+{
+ kfree((void *)kctl->private_value);
+}
+
static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer,
int validx, int bUnitID)
{
@@ -836,6 +841,7 @@ static int snd_ftu_create_effect_switch(struct usb_mixer_interface *mixer,
return -ENOMEM;
}
+ kctl->private_free = kctl_private_value_free;
err = snd_ctl_add(mixer->chip->card, kctl);
if (err < 0)
return err;
--
2.1.3
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