ensure target speed is reached

- in case the motor profile table doesn't contain target speed, add it
  to have accurate scanning resolution

backend/genesys_low.c

@@ -1650,7 +1650,7 @@ Motor_Profile *profile;
         i=0;
 	sum=0;
 
-        /* first step is used unmodified */
+        /* first step is always used unmodified */
         current=profile->table[0];
 
         /* loop on profile copying and apply step type */
@@ -1662,6 +1662,14 @@ Motor_Profile *profile;
             current=profile->table[i]>>step_type;
           }
 
+        /* ensure last step is required speed in case profile doesn't contain it */
+        if(current!=0 && current<target)
+          {
+            slope[i]=target;
+            sum+=slope[i];
+            i++;
+          }
+
         /* range checking */
         if(profile->table[i]==0 && DBG_LEVEL >= DBG_warn && current>target)
           {