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

6
arch/x86/include/asm/dma-mapping.h
View File

@@ -67,12 +67,6 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
}
#endif /* CONFIG_X86_DMA_REMAP */
static inline void
dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction dir)
{
}
static inline unsigned long dma_alloc_coherent_mask(struct device *dev,
gfp_t gfp)
{