[SERIAL] Make the Startech UART detection 'more correct'

3ebe278d · Tom Rini · Russell King · 624871f0 · 3ebe278d
Commit 3ebe278d authored Sep 29, 2003 by Tom Rini Committed by Russell King Sep 29, 2003
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Showing with 8 additions and 2 deletions

drivers/serial/8250.c drivers/serial/8250.c +8 -2

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--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -469,8 +469,14 @@ static void autoconfig_16550a(struct uart_8250_port *up)
 	 */
 	serial_outp(up, UART_LCR, UART_LCR_DLAB);
 	if (serial_in(up, UART_EFR) == 0) {
-		DEBUG_AUTOCONF("EFRv1 ");
-		up->port.type = PORT_16650;
+		serial_outp(up, UART_EFR, 0xA8);
+		if (serial_in(up, UART_EFR) != 0) {
+			DEBUG_AUTOCONF("EFRv1 ");
+			up->port.type = PORT_16650;
+		} else {
+			DEBUG_AUTOCONF("Motorola 8xxx DUART ");
+		}
+		serial_outp(up, UART_EFR, 0);
 		return;
 	}