arm: remove arch specific dma_supported implementation
And instead wire it up as method for all the dma_map_ops instances.
Note that the code seems a little fishy for dmabounce and iommu, but
for now I'd like to preserve the existing behavior 1:1.
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 4060378..6ecd5be 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -473,6 +473,7 @@
.sync_sg_for_device = arm_dma_sync_sg_for_device,
.set_dma_mask = dmabounce_set_mask,
.mapping_error = dmabounce_mapping_error,
+ .dma_supported = arm_dma_supported,
};
static int dmabounce_init_pool(struct dmabounce_pool *pool, struct device *dev,
diff --git a/arch/arm/include/asm/dma-iommu.h b/arch/arm/include/asm/dma-iommu.h
index 389a26a..c090ec6 100644
--- a/arch/arm/include/asm/dma-iommu.h
+++ b/arch/arm/include/asm/dma-iommu.h
@@ -35,5 +35,7 @@
struct dma_iommu_mapping *mapping);
void arm_iommu_detach_device(struct device *dev);
+int arm_dma_supported(struct device *dev, u64 mask);
+
#endif /* __KERNEL__ */
#endif
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 52a8fd5..8dabcfd 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -20,9 +20,6 @@
return &arm_dma_ops;
}
-#define HAVE_ARCH_DMA_SUPPORTED 1
-extern int dma_supported(struct device *dev, u64 mask);
-
#ifdef __arch_page_to_dma
#error Please update to __arch_pfn_to_dma
#endif
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 8f2c5a8..b9677ad 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -199,6 +199,7 @@
.sync_sg_for_cpu = arm_dma_sync_sg_for_cpu,
.sync_sg_for_device = arm_dma_sync_sg_for_device,
.mapping_error = arm_dma_mapping_error,
+ .dma_supported = arm_dma_supported,
};
EXPORT_SYMBOL(arm_dma_ops);
@@ -218,6 +219,7 @@
.map_page = arm_coherent_dma_map_page,
.map_sg = arm_dma_map_sg,
.mapping_error = arm_dma_mapping_error,
+ .dma_supported = arm_dma_supported,
};
EXPORT_SYMBOL(arm_coherent_dma_ops);
@@ -1184,11 +1186,10 @@
* during bus mastering, then you would pass 0x00ffffff as the mask
* to this function.
*/
-int dma_supported(struct device *dev, u64 mask)
+int arm_dma_supported(struct device *dev, u64 mask)
{
return __dma_supported(dev, mask, false);
}
-EXPORT_SYMBOL(dma_supported);
#define PREALLOC_DMA_DEBUG_ENTRIES 4096
@@ -2149,6 +2150,7 @@
.unmap_resource = arm_iommu_unmap_resource,
.mapping_error = arm_dma_mapping_error,
+ .dma_supported = arm_dma_supported,
};
const struct dma_map_ops iommu_coherent_ops = {
@@ -2167,6 +2169,7 @@
.unmap_resource = arm_iommu_unmap_resource,
.mapping_error = arm_dma_mapping_error,
+ .dma_supported = arm_dma_supported,
};
/**