linux-kernel - [PATCH] mark dma_sync_single and dma_sync

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Message-Id: <20090519125630Y.fujita.tomonori@lab.ntt.co.jp>
Date:	Tue, 19 May 2009 13:00:37 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] mark dma_sync_single and dma_sync_sg as deprecated

dma_sync_single() and dma_sync_sg() have been described as "Backwards
compat, remove in 2.7.x" for a long time (since 2.6.5).

This marks dma_sync_single() and dma_sync_sg() as deprecated so the
users get notified before removing them.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
---
 include/linux/dma-mapping.h |   17 ++++++++++++++---
 1 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 8083b6a..197ddc4 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -107,9 +107,20 @@ static inline int is_buffer_dma_capable(u64 mask, dma_addr_t addr, size_t size)
 #include <asm-generic/dma-mapping-broken.h>
 #endif
 
-/* Backwards compat, remove in 2.7.x */
-#define dma_sync_single		dma_sync_single_for_cpu
-#define dma_sync_sg		dma_sync_sg_for_cpu
+/* for backwards compatibility, removed soon */
+static inline void __deprecated dma_sync_single(struct device *dev,
+						dma_addr_t addr, size_t size,
+						enum dma_data_direction dir)
+{
+	dma_sync_single_for_cpu(dev, addr, size, dir);
+}
+
+static inline void __deprecated dma_sync_sg(struct device *dev,
+					    struct scatterlist *sg, int nelems,
+					    enum dma_data_direction dir)
+{
+	dma_sync_sg_for_cpu(dev, sg, nelems, dir);
+}
 
 static inline u64 dma_get_mask(struct device *dev)
 {
-- 
1.6.0.6

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