From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Sun, 16 Dec 2012 17:27:33 +0000 (+0100)
Subject: m68k: Provide dma_alloc_attrs()/dma_free_attrs()
X-Git-Tag: upstream/snapshot3+hdmi~5829^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4a09ab6771276a7fd3f80be4250a0fd0ba5114ad;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

m68k: Provide dma_alloc_attrs()/dma_free_attrs()

Since commit 0049fb2603b7afb1080776ee691dfa5a3d282357 ("OMAPFB: use
dma_alloc_attrs to allocate memory") we have one non-arch user of
dma_{alloc,free}_attrs().

Hence provide these functions, as wrappers around
dma_{alloc,free}_coherent().

Note that most architectures do it the other way around. But as so far
m68k doesn't support the attributes at all, our solution should generate
smaller code.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
---

diff --git a/arch/m68k/include/asm/dma-mapping.h b/arch/m68k/include/asm/dma-mapping.h
index 17f7a45..3e6b844 100644
--- a/arch/m68k/include/asm/dma-mapping.h
+++ b/arch/m68k/include/asm/dma-mapping.h
@@ -21,6 +21,22 @@ extern void *dma_alloc_coherent(struct device *, size_t,
 extern void dma_free_coherent(struct device *, size_t,
 			      void *, dma_addr_t);
 
+static inline void *dma_alloc_attrs(struct device *dev, size_t size,
+				    dma_addr_t *dma_handle, gfp_t flag,
+				    struct dma_attrs *attrs)
+{
+	/* attrs is not supported and ignored */
+	return dma_alloc_coherent(dev, size, dma_handle, flag);
+}
+
+static inline void dma_free_attrs(struct device *dev, size_t size,
+				  void *cpu_addr, dma_addr_t dma_handle,
+				  struct dma_attrs *attrs)
+{
+	/* attrs is not supported and ignored */
+	dma_free_coherent(dev, size, cpu_addr, dma_handle);
+}
+
 static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
 					  dma_addr_t *handle, gfp_t flag)
 {