diff options
| author | Masahiro Yamada | 2020-02-14 16:40:19 +0900 |
|---|---|---|
| committer | Peng Fan | 2020-02-19 21:27:30 +0800 |
| commit | 9d86b89c590832c9bcb1c69d5ccdecdf731f97ae (patch) | |
| tree | f742792fc5c973819dac194426231f05e25e4ecd /drivers/ufs | |
| parent | 950c5968672a22a65790534234d1106bd1303652 (diff) | |
dma-mapping: move dma_map_(un)single() to <linux/dma-mapping.h>
The implementation of dma_map_single() and dma_unmap_single() is
exactly the same for all the architectures that support them.
Factor them out to <linux/dma-mapping.h>, and make all drivers to
include <linux/dma-mapping.h> instead of <asm/dma-mapping.h>.
If we need to differentiate them for some architectures, we can
move the generic definitions to <asm-generic/dma-mapping.h>.
Add some comments to the helpers. The concept is quite similar to
the DMA-API of Linux kernel. Drivers are agnostic about what is
going on behind the scene. Just call dma_map_single() before the
DMA, and dma_unmap_single() after it.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'drivers/ufs')
| -rw-r--r-- | drivers/ufs/ufs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ufs/ufs.c b/drivers/ufs/ufs.c index c9346c2edc8..24e1bc2a19c 100644 --- a/drivers/ufs/ufs.c +++ b/drivers/ufs/ufs.c @@ -19,7 +19,7 @@ #include <hexdump.h> #include <scsi.h> -#include <asm/dma-mapping.h> +#include <linux/dma-mapping.h> #include "ufs.h" |