[ARM] dma: add validation of DMA params

[linux-2.6-omap-h63xx.git] / 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 1532b7a6079d56b69493dfddc99d955864a2bc86..2544a087c213a72f835b2589f5bba6bc09413dd5 100644 (file)
--- 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;