From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 23 Nov 2018 17:16:33 +0000 (+0100)
Subject: ALSA: wss: Fix invalid snd_free_pages() at error path
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=7b69154171b407844c273ab4c10b5f0ddcd6aa29;p=openwrt%2Fstaging%2Fblogic.git

ALSA: wss: Fix invalid snd_free_pages() at error path

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@sakamocchi.jp>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/isa/wss/wss_lib.c b/sound/isa/wss/wss_lib.c
index 32453f81b95a..3a5008837576 100644
--- 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 snd_pcm_substream *substream)
 	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 snd_pcm_substream *substream)
 	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;