c6x: include: asm: dma-mapping: Add dummy dma_sync_single_range_for_device

c6x does not implement get_dma_ops() for dma-mapping-common.h. And in
dma-mapping-common.h, dma_sync_single_range_for_device() may be dummy.
So c6x can just define a dummy function for allmodconfig building.

    CC [M]  drivers/net/ethernet/micrel/ks8851.o
  drivers/net/ethernet/micrel/ks8842.c: In function 'ks8842_tx_frame_dma':
  drivers/net/ethernet/micrel/ks8842.c:453:2: error: implicit declaration of function 'dma_sync_single_range_for_device' [-Werror=implicit-function-declaration]
    dma_sync_single_range_for_device(adapter->dev,
    ^

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Mark Salter <msalter@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/c6x/include/asm/dma-mapping.h b/arch/c6x/include/asm/dma-mapping.h
index 88bd0d899bdb..bbd7774e4d4e 100644
--- a/arch/c6x/include/asm/dma-mapping.h
+++ b/arch/c6x/include/asm/dma-mapping.h
@@ -17,6 +17,14 @@
 
 #define dma_supported(d, m)     1
 
+static inline void dma_sync_single_range_for_device(struct device *dev,
+                                                    dma_addr_t addr,
+                                                    unsigned long offset,
+                                                    size_t size,
+                                                    enum dma_data_direction dir)
+{
+}
+
 static inline int dma_set_mask(struct device *dev, u64 dma_mask)
 {
         if (!dev->dma_mask || !dma_supported(dev, dma_mask))