The calculation is off-by-one. It should be "end - start + 1". This
patch fixes it to use resource_size() instead. Oddly, the code already
uses resource size correctly a couple lines earlier when it calls
request_mem_region() for this memory.
Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
diff --git a/drivers/net/ftmac100.c b/drivers/net/ftmac100.c
index 1d6f4b8..a316619 100644
--- a/drivers/net/ftmac100.c
+++ b/drivers/net/ftmac100.c
@@ -1102,7 +1102,7 @@ static int ftmac100_probe(struct platform_device *pdev)
goto err_req_mem;
}
- priv->base = ioremap(res->start, res->end - res->start);
+ priv->base = ioremap(res->start, resource_size(res));
if (!priv->base) {
dev_err(&pdev->dev, "Failed to ioremap ethernet registers\n");
err = -EIO;
--
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