[ARM] Add dma_mapping_error() definition.

9b5f4e9e · Russell King · 02cae55d · 9b5f4e9e
Commit 9b5f4e9e authored Mar 25, 2004 by Russell King
Hide whitespace changes
Inline Side-by-side

Showing with 8 additions and 0 deletions

include/asm-arm/dma-mapping.h include/asm-arm/dma-mapping.h +8 -0

No files found.
--- a/include/asm-arm/dma-mapping.h
+++ b/include/asm-arm/dma-mapping.h
@@ -352,5 +352,13 @@ dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
 	}
 }
+/*
+ * DMA errors are defined by all-bits-set in the DMA address.
+ */
+static inline int dma_mapping_error(dma_addr_t dma_addr)
+{
+	return dma_addr == ~0;
+}
 #endif /* __KERNEL__ */
 #endif