Subject: [PATCH 1/1] set invalid dma channel to -1 (and properly check for it) since 0 is not an invalid channel but -1 is.

[sware <microcontrolfreak@gmail.com>]

Set the invalid dma channel to -1 (and check properly for it) in pxa2xx_pcm_hw_free().
Was assuming 0 is an invalid channel number but 0 is a valid pxa dma channel num.

Signed-off-by: stephen <stephen.ware@eqware.net>
---
 sound/soc/pxa/pxa2xx-pcm.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/pxa/pxa2xx-pcm.c b/sound/soc/pxa/pxa2xx-pcm.c
index c670d08..53b9fb1 100644
--- a/sound/soc/pxa/pxa2xx-pcm.c
+++ b/sound/soc/pxa/pxa2xx-pcm.c
@@ -61,9 +61,9 @@ static int pxa2xx_pcm_hw_free(struct snd_pcm_substream *substream)
 
 	__pxa2xx_pcm_hw_free(substream);
 
-	if (prtd->dma_ch) {
+	if (prtd->dma_ch >= 0) {
 		pxa_free_dma(prtd->dma_ch);
-		prtd->dma_ch = 0;
+		prtd->dma_ch = -1;
 	}
 
 	return 0;
-- 
1.5.4.3