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authorJosh Boyer <jwboyer@linux.vnet.ibm.com>2007-07-23 18:43:44 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-24 12:24:58 -0700
commit4f640efb3170dbcf99a37a3cc99060647b95428c (patch)
treeb600b237e4efc1c7dab2b362eae23e076e5ce8f9 /include/linux/serial_8250.h
parentf695baf2df9e0413d3521661070103711545207a (diff)
downloadop-kernel-dev-4f640efb3170dbcf99a37a3cc99060647b95428c.zip
op-kernel-dev-4f640efb3170dbcf99a37a3cc99060647b95428c.tar.gz
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>
Diffstat (limited to 'include/linux/serial_8250.h')
-rw-r--r--include/linux/serial_8250.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 8518fa2..afe0f6d 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -20,7 +20,7 @@
struct plat_serial8250_port {
unsigned long iobase; /* io base address */
void __iomem *membase; /* ioremap cookie or NULL */
- unsigned long mapbase; /* resource base */
+ resource_size_t mapbase; /* resource base */
unsigned int irq; /* interrupt number */
unsigned int uartclk; /* UART clock rate */
unsigned char regshift; /* register shift */
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