dma-mapping: translate __GFP_NOFAIL to DMA_ATTR_NO_WARN

This allows all dma_map_ops instances to entirely rely on
DMA_ATTR_NO_WARN going forward.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Robin Murphy <robin.murphy@arm.com>

1 files changed, 10 insertions, 4 deletions

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 547a48bcfa3d..15bd41447025 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -558,9 +558,11 @@ static inline void dma_free_attrs(struct device *dev, size_t size,
 }
 
 static inline void *dma_alloc_coherent(struct device *dev, size_t size,
-                dma_addr_t *dma_handle, gfp_t flag)
+                dma_addr_t *dma_handle, gfp_t gfp)
 {
-        return dma_alloc_attrs(dev, size, dma_handle, flag, 0);
+
+        return dma_alloc_attrs(dev, size, dma_handle, gfp,
+                        (gfp & __GFP_NOWARN) ? DMA_ATTR_NO_WARN : 0);
 }
 
 static inline void dma_free_coherent(struct device *dev, size_t size,
@@ -794,8 +796,12 @@ static inline void dmam_release_declared_memory(struct device *dev)
 static inline void *dma_alloc_wc(struct device *dev, size_t size,
                                  dma_addr_t *dma_addr, gfp_t gfp)
 {
-        return dma_alloc_attrs(dev, size, dma_addr, gfp,
-                               DMA_ATTR_WRITE_COMBINE);
+        unsigned long attrs = DMA_ATTR_NO_WARN;
+
+        if (gfp & __GFP_NOWARN)
+                attrs |= DMA_ATTR_NO_WARN;
+
+        return dma_alloc_attrs(dev, size, dma_addr, gfp, attrs);
 }
 #ifndef dma_alloc_writecombine
 #define dma_alloc_writecombine dma_alloc_wc