Merge remote-tracking branch 'spi/fix/dma' into spi-linus

	for (i = 0; i < sgs; i++) {

		if (vmalloced_buf || kmap_buf) {

			min = min_t(size_t,

				    len, desc_len - offset_in_page(buf));

			/*

			 * Next scatterlist entry size is the minimum between

			 * the desc_len and the remaining buffer length that

			 * fits in a page.

			 */

			min = min_t(size_t, desc_len,

				    min_t(size_t, len,

					  PAGE_SIZE - offset_in_page(buf)));

			if (vmalloced_buf)

				vm_page = vmalloc_to_page(buf);

			else