From a49a83ab05e34edd6c71a4fbd062c9a7ba6d18aa Mon Sep 17 00:00:00 2001
From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Thu, 13 Sep 2018 21:30:34 +0900
Subject: [PATCH] ALSA: firewire-digi00x: fix memory leak of private data
Git-commit: a49a83ab05e34edd6c71a4fbd062c9a7ba6d18aa
Patch-mainline: v4.19-rc5
References: bsc#1051510

Although private data of sound card instance is usually allocated in the
tail of the instance, drivers in ALSA firewire stack allocate the private
data before allocating the instance. In this case, the private data
should be released explicitly at .private_free callback of the instance.

This commit fixes memory leak following to the above design.

Fixes: 86c8dd7f4da3 ('ALSA: firewire-digi00x: delayed registration of sound card')
Cc: <stable@vger.kernel.org> # v4.7+
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 sound/firewire/digi00x/digi00x.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/firewire/digi00x/digi00x.c
+++ b/sound/firewire/digi00x/digi00x.c
@@ -49,6 +49,7 @@ static void dg00x_free(struct snd_dg00x
 	fw_unit_put(dg00x->unit);
 
 	mutex_destroy(&dg00x->mutex);
+	kfree(dg00x);
 }
 
 static void dg00x_card_free(struct snd_card *card)