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authorTakashi Iwai <tiwai@suse.de>2014-11-11 15:45:57 +0100
committerTakashi Iwai <tiwai@suse.de>2014-11-11 18:04:41 +0100
commit1a290581ded60e87276741f8ca97b161d2b226fc (patch)
treeb68edd50ace85a68c8c23d9e0537421f766703ad
parentb4565913460cbd7d86c6bd52913dfaa07fa384aa (diff)
downloadlinux-1a290581ded60e87276741f8ca97b161d2b226fc.tar.bz2
ALSA: usb-audio: Fix memory leak in FTU quirk
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@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/usb/mixer_quirks.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index f119a41ed9a9..7c83bab69dee 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -885,6 +885,11 @@ 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)
{
@@ -919,6 +924,7 @@ 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;