[PARISC] Fix mux.c driver

Missing spin_lock_init() made the Mux driver hang on SMP systems.

Fix up users of ->hpa to use ->hpa.start instead

Remove warning in 8250_gsc.c by eliminating serial_line_nr
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

drivers/serial/8250_gsc.c

@@ -29,7 +29,6 @@
 static int __init 
 serial_init_chip(struct parisc_device *dev)
 {
-	static int serial_line_nr;
 	struct uart_port port;
 	unsigned long address;
 	int err;

drivers/serial/mux.c

@@ -27,6 +27,7 @@
 #include <linux/delay.h> /* for udelay */
 #include <linux/device.h>
 #include <asm/io.h>
+#include <asm/irq.h>
 #include <asm/parisc-device.h>
 
 #ifdef CONFIG_MAGIC_SYSRQ
@@ -469,16 +470,18 @@ static int __init mux_probe(struct parisc_device *dev)
 	for(i = 0; i < ports; ++i, ++port_cnt) {
 		port = &mux_ports[port_cnt];
 		port->iobase	= 0;
-		port->mapbase	= dev->hpa + MUX_OFFSET + (i * MUX_LINE_OFFSET);
+		port->mapbase	= dev->hpa.start + MUX_OFFSET +
+						(i * MUX_LINE_OFFSET);
 		port->membase	= ioremap(port->mapbase, MUX_LINE_OFFSET);
 		port->iotype	= SERIAL_IO_MEM;
 		port->type	= PORT_MUX;
-		port->irq	= SERIAL_IRQ_NONE;
+		port->irq	= NO_IRQ;
 		port->uartclk	= 0;
 		port->fifosize	= MUX_FIFO_SIZE;
 		port->ops	= &mux_pops;
 		port->flags	= UPF_BOOT_AUTOCONF;
 		port->line	= port_cnt;
+		spin_lock_init(&port->lock);
 		status = uart_add_one_port(&mux_driver, port);
 		BUG_ON(status);
 	}