diff options
Diffstat (limited to 'arch/arm/mm/dma-mapping.c')
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index f96d2c730020..79e05f69631c 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -357,6 +357,18 @@ dma_alloc_writecombine(struct device *dev, size_t size, dma_addr_t *handle, gfp_ } EXPORT_SYMBOL(dma_alloc_writecombine); +/* + * Allocate DMA-writethrough memory space and return both the kernel remapped + * virtual and bus address for that space. + */ +void * +dma_alloc_writethrough(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp) +{ + return __dma_alloc(dev, size, handle, gfp, + pgprot_writethrough(pgprot_kernel)); +} +EXPORT_SYMBOL(dma_alloc_writethrough); + static int dma_mmap(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size) { |