[PATCH 12/12] omap: rng: Use resource_size instead of manual calculation

Tony Lindgren
2009-09-24T23:47:05Z

From: Tobias Klauser <tklauser@distanz.ch>

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@distanz.ch>
---
drivers/char/hw_random/omap-rng.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 00dd3de..06aad08 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -116,7 +116,7 @@ static int __devinit omap_rng_probe(struct platform_device *pdev)
if (!res)
return -ENOENT;

- mem = request_mem_region(res->start, res->end - res->start + 1,
+ mem = request_mem_region(res->start, resource_size(res),
pdev->name);
if (mem == NULL) {
ret = -EBUSY;
@@ -124,7 +124,7 @@ static int __devinit omap_rng_probe(struct platform_device *pdev)
}

dev_set_drvdata(&pdev->dev, mem);
- rng_base = ioremap(res->start, res->end - res->start + 1);
+ rng_base = ioremap(res->start, resource_size(res));
if (!rng_base) {
ret = -ENOMEM;
goto err_ioremap;