hwrng: timeriomem - use resource_size

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/char/hw_random/timeriomem-rng.c b/drivers/char/hw_random/timeriomem-rng.c
index a94e930575f273246adeeb644afe1577ea685079..a8428e6f64a9117ac03ef50963415217350d3239 100644 (file)
--- 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;