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5f52c35529
This patch allows transferring of some requests in PIO and some in DMA mode and defaults to using DMA only for transfers longer than 8 bytes. This is especially useful with SDIO, which can have lots of 2- and 4-byte transfers, creating unnecessary high overhead, when executed in DMA. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Chris Ball <cjb@laptop.org> |
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