xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

dma-mapping: turn dma_cache_sync into a dma_map_ops method

Browse Source 
After we removed all the dead wood it turns out only two architectures
actually implement dma_cache_sync as a real op: mips and parisc.  Add
a cache_sync method to struct dma_map_ops and implement it for the
mips defualt DMA ops, and the parisc pa11 ops.

Note that arm, arc and openrisc support DMA_ATTR_NON_CONSISTENT, but
never provided a functional dma_cache_sync implementations, which
seems somewhat odd.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
This commit is contained in:
Christoph Hellwig
2017-08-27 10:37:15 +02:00
parent e0c6584df9
commit c9eb6172c3
24 changed files with 24 additions and 128 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
arch/mips/mm/dma-default.c
View File

@@ -383,7 +383,7 @@ static int mips_dma_supported(struct device *dev, u64 mask)
return plat_dma_supported(dev, mask);
}
void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
static void mips_dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction)
{
BUG_ON(direction == DMA_NONE);
@@ -392,8 +392,6 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
__dma_sync_virtual(vaddr, size, direction);
}
EXPORT_SYMBOL(dma_cache_sync);
static const struct dma_map_ops mips_default_dma_map_ops = {
.alloc = mips_dma_alloc_coherent,
.free = mips_dma_free_coherent,
@@ -407,7 +405,8 @@ static const struct dma_map_ops mips_default_dma_map_ops = {
.sync_sg_for_cpu = mips_dma_sync_sg_for_cpu,
.sync_sg_for_device = mips_dma_sync_sg_for_device,
.mapping_error = mips_dma_mapping_error,
.dma_supported = mips_dma_supported
.dma_supported = mips_dma_supported,
.cache_sync = mips_dma_cache_sync,
};
const struct dma_map_ops *mips_dma_map_ops = &mips_default_dma_map_ops;