drivers/char/hw_random/octeon-rng.c: drop frees of devm allocated data

devm_kfree and devm_iounmap should not have to be explicitly used.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,d;
@@

x = devm_kzalloc(...)
...
?-devm_kfree(d,x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/char/hw_random/octeon-rng.c b/drivers/char/hw_random/octeon-rng.c
index 0943edc..5c34c09 100644 (file)
--- a/drivers/char/hw_random/octeon-rng.c
+++ b/drivers/char/hw_random/octeon-rng.c
@@ -75,42 +75,35 @@ static int __devinit octeon_rng_probe(struct platform_device *pdev)
 
        res_ports = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        if (!res_ports)
-               goto err_ports;
+               return -ENOENT;
 
        res_result = platform_get_resource(pdev, IORESOURCE_MEM, 1);
        if (!res_result)
-               goto err_ports;
+               return -ENOENT;
 
 
        rng->control_status = devm_ioremap_nocache(&pdev->dev,
                                                   res_ports->start,
                                                   sizeof(u64));
        if (!rng->control_status)
-               goto err_ports;
+               return -ENOENT;
 
        rng->result = devm_ioremap_nocache(&pdev->dev,
                                           res_result->start,
                                           sizeof(u64));
        if (!rng->result)
-               goto err_r;
+               return -ENOENT;
 
        rng->ops = ops;
 
        dev_set_drvdata(&pdev->dev, &rng->ops);
        ret = hwrng_register(&rng->ops);
        if (ret)
-               goto err;
+               return -ENOENT;
 
        dev_info(&pdev->dev, "Octeon Random Number Generator\n");
 
        return 0;
-err:
-       devm_iounmap(&pdev->dev, rng->control_status);
-err_r:
-       devm_iounmap(&pdev->dev, rng->result);
-err_ports:
-       devm_kfree(&pdev->dev, rng);
-       return -ENOENT;
 }
 
 static int __exit octeon_rng_remove(struct platform_device *pdev)