dma-mapping: introduce dma_get_merge_boundary()

Browse source

This patch adds a new DMA API "dma_get_merge_boundary". This function
returns the DMA merge boundary if the DMA layer can merge the segments.
This patch also adds the implementation for a new dma_map_ops pointer.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Christoph Hellwig <hch@lst.de>

...

This commit is contained in:

Yoshihiro Shimoda 2019-08-28 21:35:40 +09:00 • committed by Christoph Hellwig

parent 38c38cb732

commit 6ba99411b8

3 changed files with 25 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

8

Documentation/DMA-API.txt

View file

6

include/linux/dma-mapping.h

View file

11

kernel/dma/mapping.c

View file