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fc4618575f
Slave DMA functionality uses scatter-gather arrays for data transfers, whereas memcpy just uses a single data buffer. This patch converts the current memcpy implementation in shdma.c to use scatter-gather, making it just a special case with one SG-element. This allows us to isolate descriptor list manipulations and locking into one function, thus reducing error chances. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>