* Reset keyboard state when an emergency key has been processed - it's likely

that we lost a few keystrokes, and would make keys (like SysReq) stick.
  Thanks to Rene for the note!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31688 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/bus_managers/ps2/ps2_keyboard.c

@@ -152,8 +152,11 @@ keyboard_handle_int(ps2_dev *dev)
 		else
 			emergencyKeyStatus &= EMERGENCY_SYS_REQ;
 	} else if (emergencyKeyStatus > EMERGENCY_SYS_REQ
-		&& debug_emergency_key_pressed(kUnshiftedKeymap[scancode]))
+		&& debug_emergency_key_pressed(kUnshiftedKeymap[scancode])) {
+		// we probably have lost some keys, so reset our key states
+		emergencyKeyStatus = 0;
 		return B_HANDLED_INTERRUPT;
+	}
 
 	keyInfo.timestamp = dev->history[0].time;
 	keyInfo.scancode = scancode;

src/add-ons/kernel/drivers/input/usb_hid/KeyboardDevice.cpp

@@ -465,8 +465,11 @@ KeyboardDevice::_InterpretBuffer()
 
 				char letter = current[i] - 4 + 'a';
 
-				if (debug_emergency_key_pressed(letter))
+				if (debug_emergency_key_pressed(letter)) {
+					// we probably have lost some keys, so reset our key state
+					sysReqPressed = false;
 					continue;
+				}
 			} else if (key == 0) {
 				// unmapped key
 				key = 0x200000 + current[i];

src/system/kernel/arch/x86/arch_debug_console.c

@@ -147,8 +147,14 @@ debug_keyboard_interrupt(void *data)
 			break;
 
 		default:
-			if (altPressed && sysReqPressed)
+			if (altPressed && sysReqPressed) {
-				debug_emergency_key_pressed(kUnshiftedKeymap[key]);
+				if (debug_emergency_key_pressed(kUnshiftedKeymap[key])) {
+					// we probably have lost some keys, so reset our key states
+					controlPressed = false;
+					sysReqPressed = false;
+					altPressed = false;
+				}
+			}
 			break;
 	}