diff options
| -rw-r--r-- | include/linux/dma-contiguous.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h index 428f3b7b1c42..c05d4e661489 100644 --- a/include/linux/dma-contiguous.h +++ b/include/linux/dma-contiguous.h @@ -50,6 +50,7 @@ #ifdef __KERNEL__ #include <linux/device.h> +#include <linux/mm.h> struct cma; struct page; @@ -155,15 +156,20 @@ bool dma_release_from_contiguous(struct device *dev, struct page *pages, return false; } +/* Use fallback alloc() and free() when CONFIG_DMA_CMA=n */ static inline struct page *dma_alloc_contiguous(struct device *dev, size_t size, gfp_t gfp) { - return NULL; + int node = dev ? dev_to_node(dev) : NUMA_NO_NODE; + size_t align = get_order(PAGE_ALIGN(size)); + + return alloc_pages_node(node, gfp, align); } static inline void dma_free_contiguous(struct device *dev, struct page *page, size_t size) { + __free_pages(page, get_order(size)); } #endif |
