[PATCH 3.18 05/54] ALSA: wss: Fix invalid snd_free_pages() at error path

[Greg Kroah-Hartman]

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

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

From: Takashi Iwai <tiwai@xxxxxxx>

commit 7b69154171b407844c273ab4c10b5f0ddcd6aa29 upstream.

Some spurious calls of snd_free_pages() have been overlooked and
remain in the error paths of wss driver code.  Since runtime->dma_area
is managed by the PCM core helper, we shouldn't release manually.

Drop the superfluous calls.

Reviewed-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 sound/isa/wss/wss_lib.c |    2 --
 1 file changed, 2 deletions(-)

--- a/sound/isa/wss/wss_lib.c
+++ b/sound/isa/wss/wss_lib.c
@@ -1531,7 +1531,6 @@ static int snd_wss_playback_open(struct
 	if (err < 0) {
 		if (chip->release_dma)
 			chip->release_dma(chip, chip->dma_private_data, chip->dma1);
-		snd_free_pages(runtime->dma_area, runtime->dma_bytes);
 		return err;
 	}
 	chip->playback_substream = substream;
@@ -1572,7 +1571,6 @@ static int snd_wss_capture_open(struct s
 	if (err < 0) {
 		if (chip->release_dma)
 			chip->release_dma(chip, chip->dma_private_data, chip->dma2);
-		snd_free_pages(runtime->dma_area, runtime->dma_bytes);
 		return err;
 	}
 	chip->capture_substream = substream;