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dma-mapping: remove dma_alloc_noncoherent and dma_free_noncoherent

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No users left, everyone switched to the _attrs versions.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2017-08-25 17:06:13 +02:00
commit 2fd523c57e
5 changed files with 20 additions and 32 deletions
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30
Documentation/DMA-API.txt
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@ -515,14 +515,15 @@ API at all.
::
void *
dma_alloc_noncoherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t flag, unsigned long attrs)
Identical to dma_alloc_coherent() except that the platform will
choose to return either consistent or non-consistent memory as it sees
fit. By using this API, you are guaranteeing to the platform that you
have all the correct and necessary sync points for this memory in the
driver should it choose to return non-consistent memory.
Identical to dma_alloc_coherent() except that when the
DMA_ATTR_NON_CONSISTENT flags is passed in the attrs argument, the
platform will choose to return either consistent or non-consistent memory
as it sees fit. By using this API, you are guaranteeing to the platform
that you have all the correct and necessary sync points for this memory
in the driver should it choose to return non-consistent memory.
Note: where the platform can return consistent memory, it will
guarantee that the sync points become nops.
@ -535,12 +536,13 @@ that simply cannot make consistent memory.
::
void
dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr,
dma_addr_t dma_handle)
dma_free_attrs(struct device *dev, size_t size, void *cpu_addr,
dma_addr_t dma_handle, unsigned long attrs)
Free memory allocated by the nonconsistent API. All parameters must
be identical to those passed in (and returned by
dma_alloc_noncoherent()).
Free memory allocated by the dma_alloc_attrs(). All parameters common
parameters must identical to those otherwise passed to dma_fre_coherent,
and the attrs argument must be identical to the attrs passed to
dma_alloc_attrs().
::
@ -564,8 +566,8 @@ memory or doing partial flushes.
dma_cache_sync(struct device *dev, void *vaddr, size_t size,
enum dma_data_direction direction)
Do a partial sync of memory that was allocated by
dma_alloc_noncoherent(), starting at virtual address vaddr and
Do a partial sync of memory that was allocated by dma_alloc_attrs() with
the DMA_ATTR_NON_CONSISTENT flag starting at virtual address vaddr and
continuing on for size. Again, you *must* observe the cache line
boundaries when doing this.