From 0e18b5d7c6339311f1e32e7b186ae3556c5b6d33 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 29 Sep 2008 13:48:17 +0100 Subject: [ARM] dma: add validation of DMA params Validate the direction argument like x86 does. In addition, validate the dma_unmap_* parameters against those passed to dma_map_* when using the DMA bounce code. Signed-off-by: Russell King --- arch/arm/include/asm/dma-mapping.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/arm/include/asm/dma-mapping.h') diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 1532b7a6079d..2544a087c213 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -277,6 +277,8 @@ int dmabounce_sync_for_device(struct device *, dma_addr_t, unsigned long, static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, size_t size, enum dma_data_direction dir) { + BUG_ON(!valid_dma_direction(dir)); + if (!arch_is_coherent()) dma_cache_maint(cpu_addr, size, dir); @@ -301,6 +303,8 @@ static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, static inline dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir) { + BUG_ON(!valid_dma_direction(dir)); + if (!arch_is_coherent()) dma_cache_maint(page_address(page) + offset, size, dir); @@ -370,6 +374,8 @@ static inline void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t handle, unsigned long offset, size_t size, enum dma_data_direction dir) { + BUG_ON(!valid_dma_direction(dir)); + if (!dmabounce_sync_for_cpu(dev, handle, offset, size, dir)) return; @@ -381,6 +387,8 @@ static inline void dma_sync_single_range_for_device(struct device *dev, dma_addr_t handle, unsigned long offset, size_t size, enum dma_data_direction dir) { + BUG_ON(!valid_dma_direction(dir)); + if (!dmabounce_sync_for_device(dev, handle, offset, size, dir)) return; -- cgit v1.2.1