From 231443665882a02214c3748b9f86615a3ce9e5c2 Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Thu, 11 Mar 2010 14:08:18 -0800 Subject: tty: cpm_uart: use resource_size() 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 Cc: Alan Cox Cc: Kumar Gala Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- drivers/serial/cpm_uart/cpm_uart_cpm2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/serial/cpm_uart/cpm_uart_cpm2.c index a9802e76b5f..722eac18f38 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; -- cgit v1.2.3