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serial: Make uart_port's ioport "unsigned long".

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Otherwise the top 32-bits of the resource value get chopped
off on 64-bit systems, and the resulting I/O accesses go to
random places.

Thanks to testing and debugging by Josip Rodin, which helped
track this down.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Miller 2008-10-13 10:35:23 +01:00 committed by Linus Torvalds
parent 7459b6ff36
commit 0c8946d97a
1 changed files with 1 additions and 1 deletions
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2
include/linux/serial_core.h
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@ -241,7 +241,7 @@ typedef unsigned int __bitwise__ upf_t;
struct uart_port {
spinlock_t lock; /* port lock */
unsigned int iobase; /* in/out[bwl] */
unsigned long iobase; /* in/out[bwl] */
unsigned char __iomem *membase; /* read/write[bwl] */
unsigned int irq; /* irq number */
unsigned int uartclk; /* base uart clock */