linux-kernel - Re: [RFC PATCH 1/3] clk: add clk_bulk

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Message-ID: <CAMuHMdXuuHmjWCrLa7r8xK=Dgad9Cz9C6xibJPRVud6aq4oHxQ@mail.gmail.com>
Date:   Thu, 13 Apr 2017 21:56:31 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Dong Aisheng <aisheng.dong@....com>
Cc:     linux-clk <linux-clk@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Mark Brown <broonie@...nel.org>, yibin.gong@....com,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <fabio.estevam@....com>, anson.huang@....com,
        ping.bai@....com, leonard.crestez@....com, octavian.purdila@....com
Subject: Re: [RFC PATCH 1/3] clk: add clk_bulk_get accessories

On Wed, Apr 12, 2017 at 6:03 AM, Dong Aisheng <aisheng.dong@....com> wrote:
> --- a/drivers/clk/clk.c
> +++ b/drivers/clk/clk.c
> @@ -520,6 +520,23 @@ void clk_unprepare(struct clk *clk)
>  }
>  EXPORT_SYMBOL_GPL(clk_unprepare);
>
> +/**
> + * clk_bulk_unprepare - undo preparation of a bulk of clock sources
> + * @num_clks: the number of clk_bulk_data
> + * @clks: the clk_bulk_data table being ungated
> + *
> + * clk_bulk_unprepare may sleep, which differentiates it from clk_bulk_disable.
> + * Returns 0 on success, -EERROR otherwise.
> + */
> +void clk_bulk_unprepare(int num_clks, struct clk_bulk_data *clks)

unsigned int num_clks (everywhere)

> +{
> +       int i;

unsigned int i (everywhere)

> +
> +       for (i = 0; i < num_clks; i++)
> +               clk_unprepare(clks[i].clk);
> +}
> +EXPORT_SYMBOL_GPL(clk_bulk_unprepare);

This does mean you have to change your "while (--i >= 0)" loops.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds