[PATCH 4.12 41/99] ALSA: firewire-motu: destroy stream data surely at failure of card initialization

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4.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>

commit dbd7396b4f24e0c3284fcc05f5def24f52c09884 upstream.

When failing sound card registration after initializing stream data, this
module leaves allocated data in stream data. This commit fixes the bug.

Fixes: 9b2bb4f2f4a2 ('ALSA: firewire-motu: add stream management functionality')
Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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

--- a/sound/firewire/motu/motu.c
+++ b/sound/firewire/motu/motu.c
@@ -128,6 +128,7 @@ static void do_registration(struct work_
 	return;
 error:
 	snd_motu_transaction_unregister(motu);
+	snd_motu_stream_destroy_duplex(motu);
 	snd_card_free(motu->card);
 	dev_info(&motu->unit->device,
 		 "Sound card registration failed: %d\n", err);





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