From 29c140b623ce2c55131c6d1c26a2f3e455723b81 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 3 Feb 2012 19:03:31 +0000 Subject: [PATCH] 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 Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) 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! -- 2.7.4