mmc: omap_hsmmc: use original sg_len for dma_unmap_sg
Don't use the returned sg_len from dma_map_sg() as inparameter to dma_unmap_sg(). Use the original sg_len for both dma_map_sg and dma_unmap_sg according to the documentation in DMA-API.txt. Signed-off-by: NPer Forlin <per.forlin@linaro.org> Reviewed-by: NVenkatraman S <svenkatr@ti.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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