[PATCH] hw_random: timeriomem-rng: use resource_size

[H Hartley Sweeten]

Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Matt Mackall <mpm@xxxxxxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>

---

diff --git a/drivers/char/hw_random/timeriomem-rng.c b/drivers/char/hw_random/timeriomem-rng.c
index a94e930..a8428e6 100644
--- a/drivers/char/hw_random/timeriomem-rng.c
+++ b/drivers/char/hw_random/timeriomem-rng.c
@@ -100,8 +100,7 @@ static int __devinit timeriomem_rng_probe(struct platform_device *pdev)
 
 	timeriomem_rng_data = pdev->dev.platform_data;
 
-	timeriomem_rng_data->address = ioremap(res->start,
-						res->end - res->start + 1);
+	timeriomem_rng_data->address = ioremap(res->start, resource_size(res));
 	if (!timeriomem_rng_data->address)
 		return -EIO;
 
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