[ARM] Add dma_mapping_error() definition.

9b5f4e9e · Russell King · 02cae55d · 9b5f4e9e
Commit 9b5f4e9e authored Mar 25, 2004 by Russell King
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include/asm-arm/dma-mapping.h include/asm-arm/dma-mapping.h +8 -0

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--- 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