Russell King 26a26d3296 ARM: dma-mapping: switch ARMv7 DMA mappings to retain 'memory' attribute ... On ARMv7, it is invalid to map the same physical address multiple times with different memory types. Since system RAM is already mapped as 'memory', subsequent remapping of it must retain this attribute. However, DMA memory maps it as "strongly ordered". Fix this by introducing 'pgprot_dmacoherent()' which provides the necessary page table bits for DMA mappings. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Ungerer <gerg@uclinux.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>		2009-11-24 17:41:36 +00:00
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asm	ARM: dma-mapping: switch ARMv7 DMA mappings to retain 'memory' attribute	2009-11-24 17:41:36 +00:00