diff options
Diffstat (limited to 'include/linux/dma-mapping.h')
| -rw-r--r-- | include/linux/dma-mapping.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index aa32fecd1d3..e13117cbd2f 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -1,6 +1,7 @@ #ifndef _LINUX_DMA_MAPPING_H #define _LINUX_DMA_MAPPING_H +#include <linux/string.h> #include <linux/device.h> #include <linux/err.h> #include <linux/dma-attrs.h> @@ -120,6 +121,15 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask) return -EIO; } +static inline void *dma_zalloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag) +{ + void *ret = dma_alloc_coherent(dev, size, dma_handle, flag); + if (ret) + memset(ret, 0, size); + return ret; +} + #ifdef CONFIG_HAS_DMA static inline int dma_get_cache_alignment(void) { |