linux-kernel - Re: Coccinelle: Checking of_node

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Date:   Wed, 10 Jul 2019 17:15:33 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Wen Yang <wen.yang99@....com.cn>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-pm@...r.kernel.org, kernel-janitors@...r.kernel.org
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Cheng Shengyu <cheng.shengyu@....com.cn>,
        Kumar Gala <galak@...nel.crashing.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        Scott Wood <oss@...error.net>,
        Xue Zhihong <xue.zhihong@....com.cn>,
        Yi Wang <wang.yi59@....com.cn>, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: Coccinelle: Checking of_node_put() calls with SmPL

> we developed a coccinelle script to detect such problems.

Would you find the implementation of the function “dt_init_idle_driver”
suspicious according to discussed source code search patterns?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/cpuidle/dt_idle_states.c?id=e9a83bd2322035ed9d7dcf35753d3f984d76c6a5#n208
https://elixir.bootlin.com/linux/v5.2/source/drivers/cpuidle/dt_idle_states.c#L208

> This script is still being improved.

Will corresponding software development challenges become more interesting?

Regards,
Markus