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openrisc: remove the no-op unmap_page and unmap_sg DMA operations 

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Stafford Horne <shorne@gmail.com>
This commit is contained in:
Christoph Hellwig 2018-07-19 06:02:30 -07:00 committed by Stafford Horne
parent 1902cbcc8b
commit dcc9c91944
1 changed files with 0 additions and 23 deletions
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23
arch/openrisc/kernel/dma.c
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@ -171,14 +171,6 @@ or1k_map_page(struct device *dev, struct page *page,
return addr;
}
static void
or1k_unmap_page(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction dir,
unsigned long attrs)
{
/* Nothing special to do here... */
}
static int
or1k_map_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir,
@ -195,19 +187,6 @@ or1k_map_sg(struct device *dev, struct scatterlist *sg,
return nents;
}
static void
or1k_unmap_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir,
unsigned long attrs)
{
struct scatterlist *s;
int i;
for_each_sg(sg, s, nents, i) {
or1k_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir, 0);
}
}
static void
or1k_sync_single_for_device(struct device *dev,
dma_addr_t dma_handle, size_t size,
@ -226,9 +205,7 @@ const struct dma_map_ops or1k_dma_map_ops = {
.alloc = or1k_dma_alloc,
.free = or1k_dma_free,
.map_page = or1k_map_page,
.unmap_page = or1k_unmap_page,
.map_sg = or1k_map_sg,
.unmap_sg = or1k_unmap_sg,
.sync_single_for_device = or1k_sync_single_for_device,
};
EXPORT_SYMBOL(or1k_dma_map_ops);