From 0d1d9092b536859a333ee96cff4df0ee24b55190 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 26 Nov 2014 13:36:41 -0800
Subject: [PATCH] sparc: Add NOP dma_cache_sync() implementation.
This can be a NOP because we forward dma_{alloc,free}_noncoherent to
dma_{alloc,free}_coherent.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
arch/sparc/include/asm/dma-mapping.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h
index 5b1b52a04ad62..7e064c68c5ec8 100644
--- a/arch/sparc/include/asm/dma-mapping.h
+++ b/arch/sparc/include/asm/dma-mapping.h
@@ -12,6 +12,14 @@ int dma_supported(struct device *dev, u64 mask);
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
+ enum dma_data_direction dir)
+{
+ /* Since dma_{alloc,free}_noncoherent() allocated coherent memory, this
+ * routine can be a nop.
+ */
+}
+
extern struct dma_map_ops *dma_ops;
extern struct dma_map_ops *leon_dma_ops;
extern struct dma_map_ops pci32_dma_ops;
--
2.30.2