Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c73049...
Commit: c73049f6aa58ac1d1a9ca8cb2b415ef97240b2d3
Parent: 7eef440a545c7f812ed10b49d4a10a351df9cad6
Author: Mark Nelson <markn@au1.ibm.com>
AuthorDate: Mon Oct 27 20:38:14 2008 +0000
Committer: Paul Mackerras <paulus@samba.org>
CommitDate: Thu Nov 6 09:43:46 2008 +1100
powerpc: Remove map_/unmap_single() from dma_mapping_ops
Now that all of the remaining dma_mapping_ops have had their
map_/unmap_single functions updated to become map/unmap_page
functions, there is no need to have the map_/unmap_single function
pointers in the dma_mapping_ops.
So, this removes them and also removes the code that does the checking
for which set of functions to use.
Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Acked-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
arch/powerpc/include/asm/dma-mapping.h | 36 ++++---------------------------
1 files changed, 5 insertions(+), 31 deletions(-)
diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
index fddb229..3c4a2c2 100644
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -60,12 +60,6 @@ struct dma_mapping_ops {
dma_addr_t *dma_handle, gfp_t flag);
void (*free_coherent)(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle);
- dma_addr_t (*map_single)(struct device *dev, void *ptr,
- size_t size, enum dma_data_direction direction,
- struct dma_attrs *attrs);
- void (*unmap_single)(struct device *dev, dma_addr_t dma_addr,
- size_t size, enum dma_data_direction direction,
- struct dma_attrs *attrs);
int (*map_sg)(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction,
struct dma_attrs *attrs);
@@ -149,10 +143,9 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask)
}
/*
- * TODO: map_/unmap_single will ideally go away, to be completely
- * replaced by map/unmap_page. Until then, we allow dma_ops to have
- * one or the other, or both by checking to see if the specific
- * function requested exists; and if not, falling back on the other set.
+ * map_/unmap_single actually call through to map/unmap_page now that all the
+ * dma_mapping_ops have been converted over. We just have to get the page and
+ * offset to pass through to map_page
*/
static inline dma_addr_t dma_map_single_attrs(struct device *dev,
void *cpu_addr,
@@ -164,10 +157,6 @@ static inline dma_addr_t dma_map_single_attrs(struct device *dev,
BUG_ON(!dma_ops);
- if (dma_ops->map_single)
- return dma_ops->map_single(dev, cpu_addr, size, direction,
- attrs);
-
return dma_ops->map_page(dev, virt_to_page(cpu_addr),
(unsigned long)cpu_addr % PAGE_SIZE, size,
direction, attrs);
@@ -183,11 +172,6 @@ static inline void dma_unmap_single_attrs(struct device *dev,
BUG_ON(!dma_ops);
- if (dma_ops->unmap_single) {
- dma_ops->unmap_single(dev, dma_addr, size, direction, attrs);
- return;
- }
-
dma_ops->unmap_page(dev, dma_addr, size, direction, attrs);
}
@@ -201,12 +185,7 @@ static inline dma_addr_t dma_map_page_attrs(struct device *dev,
BUG_ON(!dma_ops);
- if (dma_ops->map_page)
- return dma_ops->map_page(dev, page, offset, size, direction,
- attrs);
-
- return dma_ops->map_single(dev, page_address(page) + offset, size,
- direction, attrs);
+ return dma_ops->map_page(dev, page, offset, size, direction, attrs);
}
static inline void dma_unmap_page_attrs(struct device *dev,
@@ -219,12 +198,7 @@ static inline void dma_unmap_page_attrs(struct device *dev,
BUG_ON(!dma_ops);
- if (dma_ops->unmap_page) {
- dma_ops->unmap_page(dev, dma_address, size, direction, attrs);
- return;
- }
-
- dma_ops->unmap_single(dev, dma_address, size, direction, attrs);
+ dma_ops->unmap_page(dev, dma_address, size, direction, attrs);
}
static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
--
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