Finalize C <=> C++ interface

src/avclan/target/avr-attiny3216/media_avr.h

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // AVR-internal media-driver hooks, shared between media_avr.c and the bus
-// transaction guard (phy_avr.c's AVCLAN_stopEvent). Not part of the public
+// transaction guard (phy_avr.c's phy_guard_enter). Not part of the public
 // mediacontrol.h interface.
 
 #pragma once
@@ -13,9 +13,9 @@ extern "C" {
 
 // Keep the TCA0 press waveform roughly in sync while a bus transaction has
 // masked interrupts (runs the OVF ISR body early if an overflow is imminent).
-// MUST be called with interrupts disabled (from within AVCLAN_stopEvent's
+// MUST be called with interrupts disabled (from within phy_guard_enter's
 // ATOMIC_BLOCK).
-void mediacontrol_syncDuringMask();
+void media_sync_during_guard();
 
 #ifdef __cplusplus
 }