Improve USb power panic

Firmware/Marlin_main.cpp

@@ -4111,6 +4111,9 @@ void process_commands()
             {
                 // M24 - Start SD print
                 enquecommand_P(MSG_M24);
+
+            // Print is recovered, clear the recovery flag
+            eeprom_update_byte((uint8_t*)EEPROM_UVLO, PowerPanic::NO_PENDING_RECOVERY);
             }
             else if (eeprom_read_byte((uint8_t*)EEPROM_UVLO_PRINT_TYPE) == PowerPanic::PRINT_TYPE_USB)
             {
@@ -4122,13 +4125,7 @@ void process_commands()
                 // Park the extruder to the side and don't resume the print
                 // we must assume that the host as not fully booted up at this point
                 lcd_pause_print();
-
-                // Used by M79 to differentiate from a normal pause
-                SetPrinterState(PrinterState::PowerPanicWaitingForHost);
             }
-
-            // Print is recovered, clear the recovery flag
-            eeprom_update_byte((uint8_t*)EEPROM_UVLO, PowerPanic::NO_PENDING_RECOVERY);
         }
 		else if (code_seen_P(PSTR("MMURES"))) // PRUSA MMURES
 		{
@@ -5987,15 +5984,12 @@ SERIAL_PROTOCOLPGM("\n\n");
             }
         }
 
-        if (GetPrinterState() == PrinterState::PowerPanicWaitingForHost && print_job_timer.isPaused()) {
+        if (eeprom_read_byte((uint8_t*)EEPROM_UVLO_PRINT_TYPE) == PowerPanic::PRINT_TYPE_USB && print_job_timer.isPaused()) {
             // The print is in a paused state. The print was recovered following a power panic
             // but up to this point the printer has been waiting for the M79 from the host
             // Send action to the host, so the host can resume the print. It is up to the host
             // to resume the print correctly.
             SERIAL_ECHOLNRPGM(MSG_OCTOPRINT_UVLO_RECOVERY_READY);
-
-            // Update the state so the action is not repeated again
-            SetPrinterState(PrinterState::IsHostPrinting);
         }
 
         break;

Firmware/cmdqueue.cpp

@@ -8,6 +8,7 @@
 #include "messages.h"
 #include "language.h"
 #include "stopwatch.h"
+#include "power_panic.h"
 
 // Reserve BUFSIZE lines of length MAX_CMD_SIZE plus CMDBUFFER_RESERVE_FRONT.
 char cmdbuffer[BUFSIZE * (MAX_CMD_SIZE + 1) + CMDBUFFER_RESERVE_FRONT];
@@ -483,6 +484,7 @@ void get_command()
         if ((*cmd_start == 'G') && (GetPrinterState() != PrinterState::IsSDPrinting)) {
             usb_timer.start();
             SetPrinterState(PrinterState::IsHostPrinting); //set printer state busy printing to hide LCD menu while USB printing
+            eeprom_update_byte((uint8_t*)EEPROM_UVLO, PowerPanic::NO_PENDING_RECOVERY);
         }
         if (allow_when_stopped == false && Stopped == true) {
             // Stopped can be set either during error states (thermal error: cannot continue), or

Firmware/printer_state.h

@@ -23,7 +23,6 @@ enum class PrinterState : uint8_t
     HostPrintingFinished = 4,
     IsSDPrinting = 5,
     IsHostPrinting = 6,
-    PowerPanicWaitingForHost = 7,
 };
 
 PrinterState GetPrinterState();