drivers/built-in.o: In function `omap_hsmmc_pre_dma_transfer':
omap_hsmmc.c:(.text+0x5a0928): undefined reference to `dma_map_sg'
drivers/built-in.o: In function `omap_hsmmc_dma_cleanup':
omap_hsmmc.c:(.text+0x5a0e8e): undefined reference to `dma_unmap_sg'
drivers/built-in.o: In function `omap_hsmmc_dma_callback':
omap_hsmmc.c:(.text+0x5a1f58): undefined reference to `dma_unmap_sg'
drivers/built-in.o: In function `omap_hsmmc_post_req':
omap_hsmmc.c:(.text+0x5a2082): undefined reference to `dma_unmap_sg'