Silence unused parameter warnings

Marlin/src/lcd/marlinui.cpp

@@ -1450,7 +1450,8 @@ void MarlinUI::update() {
       #if ENABLED(STATUS_MESSAGE_SCROLLING)
         status_scroll_offset = 0;
       #endif
-
+    #else // HAS_SPI_LCD
+      UNUSED(persist);
     #endif
 
     TERN_(EXTENSIBLE_UI, ExtUI::onStatusChanged(status_message));

Marlin/src/module/settings.cpp

@@ -2363,7 +2363,7 @@ void MarlinSettings::postprocess() {
   #if ENABLED(AUTO_BED_LEVELING_UBL)
 
     inline void ubl_invalid_slot(const int s) {
-      #if ENABLED(EEPROM_CHITCHAT)
+      #if BOTH(EEPROM_CHITCHAT, DEBUG_OUT)
         DEBUG_ECHOLNPGM("?Invalid slot.");
         DEBUG_ECHO(s);
         DEBUG_ECHOLNPGM(" mesh slots available.");

Marlin/src/module/temperature.h

@@ -69,7 +69,7 @@ hotend_pid_t;
   typedef IF<(LPQ_MAX_LEN > 255), uint16_t, uint8_t>::type lpq_ptr_t;
 #endif
 
-#define PID_PARAM(F,H) _PID_##F(TERN(PID_PARAMS_PER_HOTEND, H, 0))
+#define PID_PARAM(F,H) _PID_##F(TERN(PID_PARAMS_PER_HOTEND, H, 0 & H)) // Always use 'H' to suppress warning
 #define _PID_Kp(H) TERN(PIDTEMP, Temperature::temp_hotend[H].pid.Kp, NAN)
 #define _PID_Ki(H) TERN(PIDTEMP, Temperature::temp_hotend[H].pid.Ki, NAN)
 #define _PID_Kd(H) TERN(PIDTEMP, Temperature::temp_hotend[H].pid.Kd, NAN)

Marlin/src/sd/usb_flashdrive/Sd2Card_FlashDrive.h

@@ -70,7 +70,7 @@ class Sd2Card {
     bool readBlock(uint32_t block, uint8_t* dst);
     bool writeBlock(uint32_t blockNumber, const uint8_t* src);
 
-    bool readCSD(csd_t* csd) { return true; };
+    bool readCSD(csd_t*)                                         { return true; }
 
     uint32_t cardSize();
     static bool isInserted();