2013-04-22 05:10:46

by Damian Hobson-Garcia

[permalink] [raw]
Subject: [RFC/PATCH 4/4] s390: Provide default implementation for dma_{alloc,free}_attrs

Most architectures that define CONFIG_HAVE_DMA, have implementations for
both dma_alloc_attrs() and dma_free_attrs(). All achitectures that do
not define CONFIG_HAVE_DMA also have both of these definitions provided by

Add default implementations for these functions on s390.

Signed-off-by: Damian Hobson-Garcia <[email protected]>
arch/s390/include/asm/dma-mapping.h | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h
index 9411db65..91f7312 100644
--- a/arch/s390/include/asm/dma-mapping.h
+++ b/arch/s390/include/asm/dma-mapping.h
@@ -55,6 +55,9 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
return (dma_addr == 0UL);

+#define dma_alloc_attrs(d, s, h, f, a) dma_alloc_coherent(d, s, h, f)
+#define dma_free_attrs(d, s, h, f, a) dma_free_coherent(d, s, h, f)
static inline void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)