Use resource_size_t for serial port IO addresses

At present, various parts of the serial code use unsigned long to define
resource addresses.  This is a problem, because some 32-bit platforms have
physical addresses larger than 32-bits, and have mmio serial uarts located
above the 4GB point.

This patch changes the type of mapbase in both struct uart_port and struct
plat_serial8250_port to resource_size_t, which can be configured to be 64
bits on such platforms.  The mapbase in serial_struct can't safely be
changed, because that structure is user visible.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 0b3ec38ae614..2f5a5ac1b271 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2650,8 +2650,9 @@ static int __devinit serial8250_probe(struct platform_device *dev)
                 ret = serial8250_register_port(&port);
                 if (ret < 0) {
                         dev_err(&dev->dev, "unable to register port at index %d "
-                                "(IO%lx MEM%lx IRQ%d): %d\n", i,
-                                p->iobase, p->mapbase, p->irq, ret);
+                                "(IO%lx MEM%llx IRQ%d): %d\n", i,
+                                p->iobase, (unsigned long long)p->mapbase,
+                                p->irq, ret);
                 }
         }
         return 0;