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>
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 547a48b..15bd414 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -558,9 +558,11 @@
}
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 *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