[SERIAL] 8250: Add serial8250_config structure definition.

This structure replaces serial_uart_config to allow the 8250 driver
to extend it without breaking all the other users.

drivers/serial/8250.c

@@ -156,7 +156,7 @@ static struct irq_info irq_lists[NR_IRQS];
 /*
  * Here we define the default xmit fifo size used for each type of UART.
  */
-static const struct serial_uart_config uart_config[PORT_MAX_8250+1] = {
+static const struct serial8250_config uart_config[PORT_MAX_8250+1] = {
 	{ "unknown",	1,	0 },
 	{ "8250",	1,	0 },
 	{ "16450",	1,	0 },
@@ -710,7 +710,7 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
 #endif
 	serial_outp(up, UART_LCR, save_lcr);
 
-	up->port.fifosize = uart_config[up->port.type].dfl_xmit_fifo_size;
+	up->port.fifosize = uart_config[up->port.type].fifo_size;
 	up->capabilities = uart_config[up->port.type].flags;
 
 	if (up->port.type == PORT_UNKNOWN)

drivers/serial/8250.h

@@ -33,6 +33,15 @@ struct old_serial_port {
 	unsigned short iomem_reg_shift;
 };
 
+/*
+ * This replaces serial_uart_config in include/linux/serial.h
+ */
+struct serial8250_config {
+	const char	*name;
+	unsigned int	fifo_size;
+	unsigned int	flags;
+};
+
 #undef SERIAL_DEBUG_PCI
 
 #if defined(__i386__) && (defined(CONFIG_M386) || defined(CONFIG_M486))