code-backups/linux/sane-black-line-fix/genesys.patch

--- a/backend/genesys.c	2017-04-09 03:40:32.000000000 +0200
+++ b/backend/genesys.c	2018-01-22 16:04:42.731907170 +0100
@@ -2069,12 +2069,9 @@
   /* turn on motor and lamp power */
   dev->model->cmd_set->set_lamp_power (dev, dev->calib_reg, SANE_TRUE);
   dev->model->cmd_set->set_motor_power (dev->calib_reg, motor);
-
-  /* if needed, go back before doin next scan, by using rewind, registers and
-   * slopes table are kept intact from previous scan */
-  if (dev->model->flags & GENESYS_FLAG_SHADING_REPARK && dev->model->cmd_set->rewind)
+  if (dev->model->flags & GENESYS_FLAG_SHADING_REPARK)
     {
-      status = dev->model->cmd_set->rewind (dev);
+        status = dev->model->cmd_set->slow_back_home (dev, SANE_TRUE);
     }
 
   status =