+ if (cmd->cursg_ofs == cursg->length) {
+ cursg = cmd->cursg = sg_next(cmd->cursg);
+ cmd->cursg_ofs = 0;
+ }
+
+ /* do the actual data transfer */
+ if (write)
+ hwif->tp_ops->output_data(drive, cmd, buf, nr_bytes);
+ else
+ hwif->tp_ops->input_data(drive, cmd, buf, nr_bytes);
+
+ kunmap_atomic(buf, KM_BIO_SRC_IRQ);