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authorRussell King <rmk+kernel@arm.linux.org.uk>2012-02-03 19:03:31 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-02-09 15:34:48 +0000
commit29c140b623ce2c55131c6d1c26a2f3e455723b81 (patch)
tree92626a18b4ff1ab2c73da966b50828dc19968ad6 /arch/arm/common
parentd65b4e98d7ea3038b767b70fe8be959b2913f16d (diff)
downloadop-kernel-dev-29c140b623ce2c55131c6d1c26a2f3e455723b81.zip
op-kernel-dev-29c140b623ce2c55131c6d1c26a2f3e455723b81.tar.gz
ARM: sa1111: fix memory request/grant setup on PM events
We weren't re-enabling the memory request/grant signals on resume, causing DMA devices on the sa1111 to fail. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/common')
-rw-r--r--arch/arm/common/sa1111.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 61691cd..c7bed30 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -87,7 +87,8 @@
#define IRQ_S0_BVD1_STSCHG (53)
#define IRQ_S1_BVD1_STSCHG (54)
-extern void __init sa1110_mb_enable(void);
+extern void sa1110_mb_enable(void);
+extern void sa1110_mb_disable(void);
/*
* We keep the following data for the overall SA1111. Note that the
@@ -926,6 +927,10 @@ static int sa1111_suspend(struct platform_device *dev, pm_message_t state)
spin_unlock_irqrestore(&sachip->lock, flags);
+#ifdef CONFIG_ARCH_SA1100
+ sa1110_mb_disable();
+#endif
+
return 0;
}
@@ -966,6 +971,11 @@ static int sa1111_resume(struct platform_device *dev)
*/
sa1111_wake(sachip);
+#ifdef CONFIG_ARCH_SA1100
+ /* Enable the memory bus request/grant signals */
+ sa1110_mb_enable();
+#endif
+
/*
* Only lock for write ops. Also, sa1111_wake must be called with
* released spinlock!
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