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authorJosh Boyer <jwboyer@linux.vnet.ibm.com>2007-07-24 05:43:44 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-24 23:24:58 +0400
commit4f640efb3170dbcf99a37a3cc99060647b95428c (patch)
treeb600b237e4efc1c7dab2b362eae23e076e5ce8f9 /drivers/serial/serial_core.c
parentf695baf2df9e0413d3521661070103711545207a (diff)
downloadlinux-4f640efb3170dbcf99a37a3cc99060647b95428c.tar.xz
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 'drivers/serial/serial_core.c')
-rw-r--r--drivers/serial/serial_core.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 9c57486c2e7f..030a6063541d 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -626,7 +626,7 @@ static int uart_get_info(struct uart_state *state,
tmp.hub6 = port->hub6;
tmp.io_type = port->iotype;
tmp.iomem_reg_shift = port->regshift;
- tmp.iomem_base = (void *)port->mapbase;
+ tmp.iomem_base = (void *)(unsigned long)port->mapbase;
if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
return -EFAULT;
@@ -1666,10 +1666,11 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i)
return 0;
mmio = port->iotype >= UPIO_MEM;
- ret = sprintf(buf, "%d: uart:%s %s%08lX irq:%d",
+ ret = sprintf(buf, "%d: uart:%s %s%08llX irq:%d",
port->line, uart_type(port),
mmio ? "mmio:0x" : "port:",
- mmio ? port->mapbase : (unsigned long) port->iobase,
+ mmio ? (unsigned long long)port->mapbase
+ : (unsigned long long) port->iobase,
port->irq);
if (port->type == PORT_UNKNOWN) {
@@ -2069,7 +2070,7 @@ uart_report_port(struct uart_driver *drv, struct uart_port *port)
case UPIO_TSI:
case UPIO_DWAPB:
snprintf(address, sizeof(address),
- "MMIO 0x%lx", port->mapbase);
+ "MMIO 0x%llx", (unsigned long long)port->mapbase);
break;
default:
strlcpy(address, "*unknown*", sizeof(address));