linux-kernel - RE: [RESEND PATCH] PM / devfreq: Fix static checker warning in try_then_request

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Date:   Thu, 14 Mar 2019 16:47:34 +0900
From:   MyungJoo Ham <myungjoo.ham@...sung.com>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "kernel@...labora.com" <kernel@...labora.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>
Subject: RE: [RESEND PATCH] PM / devfreq: Fix static checker warning in
 try_then_request_governor

>The patch 23c7b54ca1cd: "PM / devfreq: Fix devfreq_add_device() when
>drivers are built as modules." leads to the following static checker
>warning:
>
>    drivers/devfreq/devfreq.c:1043 governor_store()
>    warn: 'governor' can also be NULL
>
>The reason is that the try_then_request_governor() function returns both
>error pointers and NULL. It should just return error pointers, so fix
>this by returning a ERR_PTR to the error intead of returning NULL.
>
>Fixes: 23c7b54ca1cd ("PM / devfreq: Fix devfreq_add_device() when drivers are built as modules.")
>Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
>Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
>Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>
>---
>Hi,
>
>This is a resend of [1] as seems that got lost at some point and I just
>noticed that was never merged.
>
>Thanks,
> Enric

Acked-by: MyungJoo Ham <myungjoo.ham@...sung.com>

Thanks!


CHeers,
MyungJoo