From: lars <lars@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Mon, 22 Mar 2010 18:57:50 +0000 (+0000)
Subject: [xburst] sound jz4740_pcm: Set dma channel to NULL after it has been freed,
X-Git-Url: http://git.ozo.com/?p=openwrt-10.03%2F.git;a=commitdiff_plain;h=113249c0a943849326e437dedcd62b2128bc06b1;hp=124c6d16d7692446d6ff6bbae6f10f32eafcc66e

[xburst] sound jz4740_pcm: Set dma channel to NULL after it has been freed,
because hw_free can be called multiple times aswell.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20373 3c298f89-4303-0410-b956-a3cf2f4a3e73
---

diff --git a/target/linux/xburst/files-2.6.32/sound/soc/jz4740/jz4740-pcm.c b/target/linux/xburst/files-2.6.32/sound/soc/jz4740/jz4740-pcm.c
index 4a4de195a..3ccc652a0 100644
--- a/target/linux/xburst/files-2.6.32/sound/soc/jz4740/jz4740-pcm.c
+++ b/target/linux/xburst/files-2.6.32/sound/soc/jz4740/jz4740-pcm.c
@@ -136,8 +136,10 @@ static int jz4740_pcm_hw_free(struct snd_pcm_substream *substream)
 	struct jz4740_runtime_data *prtd = substream->runtime->private_data;
 
 	snd_pcm_set_runtime_buffer(substream, NULL);
-	if (prtd->dma)
+	if (prtd->dma) {
 		jz4740_dma_free(prtd->dma);
+		prtd->dma = NULL;
+	}
 
 	return 0;
 }