dma40: combine duplicated code in log_sg_to_dev

Acked-by: Per Forlin <per.forlin@stericsson.com>
Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/dma/ste_dma40_ll.c

@@ -385,40 +385,34 @@ int d40_log_sg_to_dev(struct scatterlist *sg,
 	struct d40_log_lli *lli_dst = lli->dst;
 
 	for_each_sg(sg, current_sg, sg_len, i) {
-		total_size += sg_dma_len(current_sg);
+		dma_addr_t sg_addr = sg_dma_address(current_sg);
+		unsigned int len = sg_dma_len(current_sg);
+		dma_addr_t src;
+		dma_addr_t dst;
+
+		total_size += len;
 
 		if (direction == DMA_TO_DEVICE) {
-			lli_src =
-				d40_log_buf_to_lli(lli_src,
-						   sg_dma_address(current_sg),
-						   sg_dma_len(current_sg),
-						   lcsp->lcsp1, src_data_width,
-						   dst_data_width,
-						   true);
-			lli_dst =
-				d40_log_buf_to_lli(lli_dst,
-						   dev_addr,
-						   sg_dma_len(current_sg),
-						   lcsp->lcsp3, dst_data_width,
-						   src_data_width,
-						   false);
+			src = sg_addr;
+			dst = dev_addr;
 		} else {
-			lli_dst =
-				d40_log_buf_to_lli(lli_dst,
-						   sg_dma_address(current_sg),
-						   sg_dma_len(current_sg),
-						   lcsp->lcsp3, dst_data_width,
-						   src_data_width,
-						   true);
-			lli_src =
-				d40_log_buf_to_lli(lli_src,
-						   dev_addr,
-						   sg_dma_len(current_sg),
-						   lcsp->lcsp1, src_data_width,
-						   dst_data_width,
-						   false);
+			src = dev_addr;
+			dst = sg_addr;
 		}
+
+		lli_src = d40_log_buf_to_lli(lli_src, src, len,
+					     lcsp->lcsp1,
+					     src_data_width,
+					     dst_data_width,
+					     src == sg_addr);
+
+		lli_dst = d40_log_buf_to_lli(lli_dst, dst, len,
+					     lcsp->lcsp3,
+					     dst_data_width,
+					     src_data_width,
+					     dst == sg_addr);
 	}
+
 	return total_size;
 }