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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>
This commit is contained in:
Russell King 2012-02-03 19:03:31 +00:00
parent d65b4e98d7
commit 29c140b623
1 changed files with 11 additions and 1 deletions
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12
arch/arm/common/sa1111.c
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@ -87,7 +87,8 @@
#define IRQ_S0_BVD1_STSCHG (53) #define IRQ_S0_BVD1_STSCHG (53)
#define IRQ_S1_BVD1_STSCHG (54) #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 * 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); spin_unlock_irqrestore(&sachip->lock, flags);
#ifdef CONFIG_ARCH_SA1100
sa1110_mb_disable();
#endif
return 0; return 0;
} }
@ -966,6 +971,11 @@ static int sa1111_resume(struct platform_device *dev)
*/ */
sa1111_wake(sachip); 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 * Only lock for write ops. Also, sa1111_wake must be called with
* released spinlock! * released spinlock!