openwrt-xburst/target/linux/ar7/patches-3.6/500-serial_kludge.patch

--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -290,6 +290,13 @@ static const struct serial8250_config ua
 				  UART_FCR_R_TRIG_00 | UART_FCR_T_TRIG_00,
 		.flags		= UART_CAP_FIFO,
 	},
+	[PORT_AR7] = {
+		.name		= "TI-AR7",
+		.fifo_size	= 16,
+		.tx_loadsz	= 16,
+		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00,
+		.flags		= UART_CAP_FIFO | UART_CAP_AFE,
+	},
 };
 
 /* Uart divisor latch read */
@@ -2752,7 +2759,11 @@ static void serial8250_console_putchar(s
 	struct uart_8250_port *up =
 		container_of(port, struct uart_8250_port, port);
 
+#ifdef CONFIG_AR7
+	wait_for_xmitr(up, BOTH_EMPTY);
+#else
 	wait_for_xmitr(up, UART_LSR_THRE);
+#endif
 	serial_port_out(port, UART_TX, ch);
 }