linux-kernel - Re: [1/7] cpufreq: ap806: Checking implementation of armada_8k_cpufreq

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Message-ID: <bc7c03e2-798f-7ccc-4386-227a9e16611d@web.de>
Date:   Tue, 2 Apr 2019 15:54:27 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Wen Yang <wen.yang99@....com.cn>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        kernel-janitors@...r.kernel.org
Cc:     Andrew Lunn <andrew@...n.ch>, Jason Cooper <jason@...edaemon.net>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Yi Wang <wang.yi59@....com.cn>
Subject: Re: [1/7] cpufreq: ap806: Checking implementation of
 armada_8k_cpufreq_init()

> @@ -132,6 +132,7 @@ static int __init armada_8k_cpufreq_init(void)
>  		of_node_put(node);
>  		return -ENODEV;
>  	}
> +	of_node_put(node);
>
>  	nb_cpus = num_possible_cpus();
>  	freq_tables = kcalloc(nb_cpus, sizeof(*freq_tables), GFP_KERNEL);

Would another null pointer check be safer for this memory allocation?
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/drivers/cpufreq/armada-8k-cpufreq.c?id=05d08e2995cbe6efdb993482ee0d38a77040861a#n137

Regards,
Markus