Re: [PATCH 10/12] cpufreq: ap806: add missing of_node_put after of_device_is_available

Viresh Kumar
2019-02-25T04:29:50Z

On 23-02-19, 14:20, Julia Lawall wrote:
> Add an of_node_put when a tested device node is not available.
>
> The semantic patch that fixes this problem is as follows
> (http://coccinelle.lip6.fr):
>
> // <smpl>
> @@
> identifier f;
> local idexpression e;
> expression x;
> @@
>
> e = f(...);
> ... when != of_node_put(e)
> when != x = e
> when != e = x
> when any
> if (<+...of_device_is_available(e)...+>) {
> ... when != of_node_put(e)
> (
> return e;
> |
> + of_node_put(e);
> return ...;
> )
> }
> // </smpl>
>
> Fixes: f525a670533d9 ("cpufreq: ap806: add cpufreq driver for Armada 8K")
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
>
> ---
> drivers/cpufreq/armada-8k-cpufreq.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff -u -p a/drivers/cpufreq/armada-8k-cpufreq.c b/drivers/cpufreq/armada-8k-cpufreq.c
> --- a/drivers/cpufreq/armada-8k-cpufreq.c
> +++ b/drivers/cpufreq/armada-8k-cpufreq.c
> @@ -128,8 +128,10 @@ static int __init armada_8k_cpufreq_init
> struct cpumask cpus;
>
> node = of_find_compatible_node(NULL, NULL, "marvell,ap806-cpu-clock");
> - if (!node || !of_device_is_available(node))
> + if (!node || !of_device_is_available(node)) {
> + of_node_put(node);
> return -ENODEV;
> + }
>
> nb_cpus = num_possible_cpus();
> freq_tables = kcalloc(nb_cpus, sizeof(*freq_tables), GFP_KERNEL);

Applied. Thanks.

--
viresh