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Subject: Re: [PATCH v2 1/2] ASoC: fsl_mqs: Don't check clock is NULL before
 calling clk API
To:     Shengjiu Wang <shengjiu.wang@gmail.com>,
        alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org
Cc:     Shengjiu Wang <shengjiu.wang@nxp.com>,
        Xiubo Li <Xiubo.Lee@gmail.com>, Timur Tabi <timur@kernel.org>,
        Takashi Iwai <tiwai@suse.com>,
        Nicolin Chen <nicoleotsuka@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Fabio Estevam <festevam@gmail.com>,
        kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
References: <39ac8f24-3148-2a3d-3f8d-91567b3c4c9e@web.de>
 <CAA+D8APR2NGAn9jRDSZzr1fgj5u0hAvH19VxZS+tj2A7j3PCuw@mail.gmail.com>
From:   Markus Elfring <Markus.Elfring@web.de>
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Date:   Tue, 23 Jun 2020 10:55:52 +0200
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>     clk_prepare_enable and clk_disable_unprepare check the input
>     clock parameter in the beginning of the function,

These functions call further functions which perform null pointer checks.


>                                                       if the parameter
>     is NULL, clk_prepare_enable and clk_disable_unprepare will
>     return immediately.

The interpretation of these function implementations seems to be reasonable.
Would you like to achieve any improvements for the corresponding software documentation?


>     So Don't need to check input clock parameters before calling clk API.

What do you find imperative in this wording?

Another wording alternative:
   Thus omit extra null pointer checks before four function calls.

Regards,
Markus