From 0827d6ba0b76be398a3c4298afd41f4965d2cdcb Mon Sep 17 00:00:00 2001
From: Grant Likely <grant.likely@secretlab.ca>
Date: Thu, 2 Jul 2009 11:57:25 -0600
Subject: ASoC: add locking to mpc5200-psc-ac97 driver

AC97 bus register read/write hooks need to provide locking, but the
mpc5200-psc-ac97 driver does not.  This patch adds a mutex around
the register access routines.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
 sound/soc/fsl/mpc5200_dma.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'sound/soc/fsl/mpc5200_dma.h')

diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
index 2000803f06a7..8d396bb9d9fe 100644
--- a/sound/soc/fsl/mpc5200_dma.h
+++ b/sound/soc/fsl/mpc5200_dma.h
@@ -55,6 +55,7 @@ struct psc_dma {
 	unsigned int irq;
 	struct device *dev;
 	spinlock_t lock;
+	struct mutex mutex;
 	u32 sicr;
 	uint sysclk;
 	int imr;
-- 
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