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ALSA: firewire-tascam: fix memory leak of private data

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commit 8d28277c06 upstream.

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: b610386c8a ('ALSA: firewire-tascam: deleyed 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Sakamoto
2018-09-13 21:31:05 +09:00
committed by Greg Kroah-Hartman
parent effd213a43
commit 454fd956d0
1 changed files with 1 additions and 0 deletions
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sound/firewire/tascam/tascam.c
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@@ -93,6 +93,7 @@ static void tscm_free(struct snd_tscm *tscm)
fw_unit_put(tscm->unit);
mutex_destroy(&tscm->mutex);
kfree(tscm);
}
static void tscm_card_free(struct snd_card *card)