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| author | Adrian Larumbe <adrianml@alumnos.upm.es> | 2021-11-01 18:08:24 +0000 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-11-22 11:38:05 +0530 |
| commit | 3218910fd5858842a1dd98ce92b602f0878f8210 (patch) | |
| tree | 2490bc6c3812b72a3038b2a04ee9b55a73ef6958 /arch/csky | |
| parent | 58fe107660483138a7a77acd673b911016e4ad31 (diff) | |
| download | linux-stable-3218910fd5858842a1dd98ce92b602f0878f8210.tar.gz linux-stable-3218910fd5858842a1dd98ce92b602f0878f8210.tar.bz2 linux-stable-3218910fd5858842a1dd98ce92b602f0878f8210.zip | |
dmaengine: Add core function and capability check for DMA_MEMCPY_SG
This is the old DMA_SG interface that was removed in commit
c678fa66341c ("dmaengine: remove DMA_SG as it is dead code in kernel"). It
has been renamed to DMA_MEMCPY_SG to better match the MEMSET and MEMSET_SG
naming convention.
It should only be used for mem2mem copies, either main system memory or
CPU-addressable device memory (like video memory on a PCI graphics card).
Bringing back this interface was prompted by the need to use the Xilinx
CDMA device for mem2mem SG transfers.
Signed-off-by: Adrian Larumbe <adrianml@alumnos.upm.es>
Link: https://lore.kernel.org/r/20211101180825.241048-3-adrianml@alumnos.upm.es
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'arch/csky')
0 files changed, 0 insertions, 0 deletions