[PATCH] serial: Fix matching of MMIO ports

[Benjamin Herrenschmidt]

The function uart_match_port() incorrectly compares the ioremap'd
virtual addresses of ports instead of the physical address to find
duplicate ports for MMIO based UARTs. This fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>

Index: linux-work/drivers/serial/serial_core.c
===================================================================
--- linux-work.orig/drivers/serial/serial_core.c	2005-11-14 20:32:16.000000000 +1100
+++ linux-work/drivers/serial/serial_core.c	2005-11-29 08:08:44.000000000 +1100
@@ -2307,7 +2307,7 @@
 		return (port1->iobase == port2->iobase) &&
 		       (port1->hub6   == port2->hub6);
 	case UPIO_MEM:
-		return (port1->membase == port2->membase);
+		return (port1->mapbase == port2->mapbase);
 	}
 	return 0;
 }


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