sh: Add dma-mapping support for dma_alloc/free_coherent() overrides.

This moves the current dma_alloc/free_coherent() calls to a generic
variant and plugs them in for the nommu default. Other variants can
override the defaults in the dma mapping ops directly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/sh/kernel/dma-nommu.c b/arch/sh/kernel/dma-nommu.c
index e88fcebf860..b336fcf40f1 100644
--- a/arch/sh/kernel/dma-nommu.c
+++ b/arch/sh/kernel/dma-nommu.c
@@ -61,6 +61,8 @@ static void nommu_sync_sg(struct device *dev, struct scatterlist *sg,
 }
 
 struct dma_map_ops nommu_dma_ops = {
+        .alloc_coherent         = dma_generic_alloc_coherent,
+        .free_coherent          = dma_generic_free_coherent,
         .map_page               = nommu_map_page,
         .map_sg                 = nommu_map_sg,
         .sync_single_for_device = nommu_sync_single,