From d1401e1dc22606a91f577ad3dfd68ae7e60e0357 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Wed, 16 Jun 2010 09:12:10 +0000 Subject: Blackfin: fix DMA/cache bug when resuming from suspend to RAM The dma_memcpy() function takes care of flushing different caches for us. Normally this is what we want, but when resuming from mem, we don't yet have caches enabled. If these functions happen to be placed into L1 mem (which is what we're trying to relocate), then things aren't going to work. So define a non-cache dma_memcpy() variant to utilize in situations like this. Signed-off-by: Michael Hennerich Signed-off-by: Mike Frysinger --- arch/blackfin/include/asm/dma.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/blackfin/include') diff --git a/arch/blackfin/include/asm/dma.h b/arch/blackfin/include/asm/dma.h index 2c09b1d..eedf3ca 100644 --- a/arch/blackfin/include/asm/dma.h +++ b/arch/blackfin/include/asm/dma.h @@ -276,6 +276,7 @@ static inline void clear_dma_irqstat(unsigned int channel) } void *dma_memcpy(void *dest, const void *src, size_t count); +void *dma_memcpy_nocache(void *dest, const void *src, size_t count); void *safe_dma_memcpy(void *dest, const void *src, size_t count); void blackfin_dma_early_init(void); void early_dma_memcpy(void *dest, const void *src, size_t count); -- cgit v1.1