[PATCH] cpm_uart: Use resource_size()

From: Tobias Klauser
Date: Wed Feb 17 2010 - 03:00:53 EST


Use the resource_size function instead of manually calculating the
resource size. This reduces the chance of introducing off-by-one errors.

Signed-off-by: Tobias Klauser <tklauser@xxxxxxxxxx>
---
drivers/serial/cpm_uart/cpm_uart_cpm2.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
index a9802e7..722eac1 100644
--- a/drivers/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
@@ -61,7 +61,7 @@ void __iomem *cpm_uart_map_pram(struct uart_cpm_port *port,
void __iomem *pram;
unsigned long offset;
struct resource res;
- unsigned long len;
+ resource_size_t len;

/* Don't remap parameter RAM if it has already been initialized
* during console setup.
@@ -74,7 +74,7 @@ void __iomem *cpm_uart_map_pram(struct uart_cpm_port *port,
if (of_address_to_resource(np, 1, &res))
return NULL;

- len = 1 + res.end - res.start;
+ len = resource_size(&res);
pram = ioremap(res.start, len);
if (!pram)
return NULL;
--
1.6.3.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/