dma-mapping: support non-coherent devices in dma_common_get_sgtable
We can use the arch_dma_coherent_to_pfn hook to provide a ->get_sgtable
implementation. Note that this isn't an endorsement of this interface
(which is a horrible bad idea), but it is required to move arm64 over
to the generic code without a loss of functionality.
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index c3378d4..bd81e74 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -483,8 +483,8 @@
#define dma_mmap_coherent(d, v, c, h, s) dma_mmap_attrs(d, v, c, h, s, 0)
int
-dma_common_get_sgtable(struct device *dev, struct sg_table *sgt,
- void *cpu_addr, dma_addr_t dma_addr, size_t size);
+dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, void *cpu_addr,
+ dma_addr_t dma_addr, size_t size, unsigned long attrs);
static inline int
dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, void *cpu_addr,
@@ -496,7 +496,8 @@
if (ops->get_sgtable)
return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size,
attrs);
- return dma_common_get_sgtable(dev, sgt, cpu_addr, dma_addr, size);
+ return dma_common_get_sgtable(dev, sgt, cpu_addr, dma_addr, size,
+ attrs);
}
#define dma_get_sgtable(d, t, v, h, s) dma_get_sgtable_attrs(d, t, v, h, s, 0)