# \[PATCH 11/44\] m32r: remove DMA\_ERROR\_CODE

- From: Christoph Hellwig \<hch@lst.de\>
- Date: 2017-06-08 13:40:59 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2017/06/5016114
- Thread: https://ratatoskr.run/linux-arm-kernel/2017/06/5016133/t.md

```text
dma-noop is the only dma_mapping_ops instance for m32r and does not return
errors.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/m32r/include/asm/dma-mapping.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/m32r/include/asm/dma-mapping.h b/arch/m32r/include/asm/dma-mapping.h
index c01d9f52d228..aff3ae8b62f7 100644
--- a/arch/m32r/include/asm/dma-mapping.h
+++ b/arch/m32r/include/asm/dma-mapping.h
@@ -8,8 +8,6 @@
 #include <linux/dma-debug.h>
 #include <linux/io.h>
 
-#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
-
 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
 {
 	return &dma_noop_ops;
-- 
2.11.0
```