[PATCH] Serial driver iomem fixes

[Matthew Wilcox]

This patch was written by Alex Williamson.  It fixes a few bugs in the
serial driver that are related to iomem.  Please apply for 2.4.

diff -urNX ../dontdiff linux-ia64/drivers/char/serial.c linux-generic/drivers/char/serial.c
--- linux-ia64/drivers/char/serial.c	Sat May 18 11:58:49 2002
+++ linux-generic/drivers/char/serial.c	Tue May 28 09:42:58 2002
@@ -2133,6 +2137,7 @@
 	if (new_serial.type) {
 		for (i = 0 ; i < NR_PORTS; i++)
 			if ((state != &rs_table[i]) &&
+			    (rs_table[i].io_type == SERIAL_IO_PORT) &&
 			    (rs_table[i].port == new_port) &&
 			    rs_table[i].type)
 				return -EADDRINUSE;
@@ -2195,7 +2200,7 @@
 
 	
 check_and_exit:
-	if (!state->port || !state->type)
+	if ((!state->port && !state->iomem_base) || !state->type)
 		return 0;
 	if (info->flags & ASYNC_INITIALIZED) {
 		if (((old_state.flags & ASYNC_SPD_MASK) !=
@@ -5486,7 +5652,7 @@
 		    && (state->port != 0 || state->iomem_base != 0))
 			state->irq = detect_uart_irq(state);
 		if (state->io_type == SERIAL_IO_MEM) {
-			printk(KERN_INFO"ttyS%02d%s at 0x%px (irq = %d) is a %s\n",
+			printk(KERN_INFO"ttyS%02d%s at 0x%p (irq = %d) is a %s\n",
 	 		       state->line + SERIAL_DEV_OFFSET,
 			       (state->flags & ASYNC_FOURPORT) ? " FourPort" : "",
 			       state->iomem_base, state->irq,

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