[PATCH RESEND 3/3] mmc: rtsx: add support for pre_req and post_req

From: Micky Ching Add support for non-blocking request, pre_req() runs dma_map_sg() and post_req() runs dma_unmap_sg(). This patch can increase card read/write speed, especially for high speed card and slow CPU(for some embedded platform). Users can get a great benefit from this patch. if CPU

[PATCH RESEND 3/3] mmc: rtsx: add support for pre_req and post_req

From: Micky Ching micky_ch...@realsil.com.cn Add support for non-blocking request, pre_req() runs dma_map_sg() and post_req() runs dma_unmap_sg(). This patch can increase card read/write speed, especially for high speed card and slow CPU(for some embedded platform). Users can get a great benefit