[AVR32] Implement dma_mapping_error()
dma_map_single() never fails, so dma_mapping_error() simply returns 0.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
diff --git a/include/asm-avr32/dma-mapping.h b/include/asm-avr32/dma-mapping.h
index 5c01e27..115813e 100644
--- a/include/asm-avr32/dma-mapping.h
+++ b/include/asm-avr32/dma-mapping.h
@@ -32,6 +32,14 @@
return 0;
}
+/*
+ * dma_map_single can't fail as it is implemented now.
+ */
+static inline int dma_mapping_error(dma_addr_t addr)
+{
+ return 0;
+}
+
/**
* dma_alloc_coherent - allocate consistent memory for DMA
* @dev: valid struct device pointer, or NULL for ISA and EISA-like devices