Restore old buffer size

Documentation/Laser/K40_ramps_configs/Configuration_Feature.h

@@ -452,7 +452,7 @@
  * This prevents dangerous Extruder moves.                             *
  *                                                                     *
  ***********************************************************************/
-#define PREVENT_DANGEROUS_EXTRUDE
+//#define PREVENT_DANGEROUS_EXTRUDE
 #define EXTRUDE_MINTEMP 170 // degC
 
 // if PREVENT DANGEROUS EXTRUDE is on, you can still disable (uncomment) very long bits of extrusion separately.
@@ -1669,7 +1669,7 @@
  ****************************************************************************************/
 // The number of linear motions that can be in the plan at any give time.
 // THE BLOCK BUFFER SIZE NEEDS TO BE A POWER OF 2, i.g. 8,16,32 because shifts and ors are used to do the ring-buffering.
-#define BLOCK_BUFFER_SIZE 32 // maximize block buffer
+#define BLOCK_BUFFER_SIZE 16 // maximize block buffer
 
 //The ASCII buffer for receiving from the serial:
 #define MAX_CMD_SIZE  96

MK/module/MK_Main.cpp

@@ -4904,6 +4904,7 @@ inline void gcode_G92() {
       laser.status = LASER_OFF;
       lcd_update();
       prepare_move();
+      KEEPALIVE_STATE(NOT_BUSY);
     #endif
   }
 #endif //LASERBEAM