diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-09-01 13:34:33 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-09-25 06:20:47 +0200 |
| commit | efa70f2fdc842e63a0a13223e0e83cedcc2117f1 (patch) | |
| tree | ef21550627a0a50be9edf10c53542f9c59a61896 /kernel/dma/virt.c | |
| parent | 5a84292271402cffe0717bc58e2ad9a0c7977272 (diff) | |
dma-mapping: add a new dma_alloc_pages API
This API is the equivalent of alloc_pages, except that the returned memory
is guaranteed to be DMA addressable by the passed in device. The
implementation will also be used to provide a more sensible replacement
for DMA_ATTR_NON_CONSISTENT flag.
Additionally dma_alloc_noncoherent is switched over to use dma_alloc_pages
as its backend.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> (MIPS part)
Diffstat (limited to 'kernel/dma/virt.c')
| -rw-r--r-- | kernel/dma/virt.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/dma/virt.c b/kernel/dma/virt.c index ebe128833af7..6986bf1fd668 100644 --- a/kernel/dma/virt.c +++ b/kernel/dma/virt.c @@ -55,5 +55,7 @@ const struct dma_map_ops dma_virt_ops = { .free = dma_virt_free, .map_page = dma_virt_map_page, .map_sg = dma_virt_map_sg, + .alloc_pages = dma_common_alloc_pages, + .free_pages = dma_common_free_pages, }; EXPORT_SYMBOL(dma_virt_ops); |