linux-kernel - Re: [PATCH 5/8] clk: sunxi-ng: Export symbols used by CCU drivers

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Date:   Wed, 1 Sep 2021 21:54:52 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Maxime Ripard <mripard@...nel.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        linux-sunxi@...ts.linux.dev,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/8] clk: sunxi-ng: Export symbols used by CCU drivers

On Wed, Sep 1, 2021 at 1:05 PM Samuel Holland <samuel@...lland.org> wrote:
>
> For the individual drivers to be built as modules, the ops structs and
> callback registration functions must be exported. None of the helper
> functions are exported, because they are only referenced from the
> corresponding ops structs. of_sunxi_ccu_probe is not exported, because
> it is only used for built-in early OF clock providers.
>
> Signed-off-by: Samuel Holland <samuel@...lland.org>
> ---
>  drivers/clk/sunxi-ng/ccu_common.c | 2 ++
>  drivers/clk/sunxi-ng/ccu_div.c    | 1 +
>  drivers/clk/sunxi-ng/ccu_gate.c   | 1 +
>  drivers/clk/sunxi-ng/ccu_mp.c     | 2 ++
>  drivers/clk/sunxi-ng/ccu_mult.c   | 1 +
>  drivers/clk/sunxi-ng/ccu_mux.c    | 2 ++
>  drivers/clk/sunxi-ng/ccu_nk.c     | 1 +
>  drivers/clk/sunxi-ng/ccu_nkm.c    | 1 +
>  drivers/clk/sunxi-ng/ccu_nkmp.c   | 1 +
>  drivers/clk/sunxi-ng/ccu_nm.c     | 1 +
>  drivers/clk/sunxi-ng/ccu_phase.c  | 1 +
>  drivers/clk/sunxi-ng/ccu_reset.c  | 1 +
>  12 files changed, 15 insertions(+)
>
> diff --git a/drivers/clk/sunxi-ng/ccu_common.c b/drivers/clk/sunxi-ng/ccu_common.c
> index 31af8b6b5286..3ab109582646 100644
> --- a/drivers/clk/sunxi-ng/ccu_common.c
> +++ b/drivers/clk/sunxi-ng/ccu_common.c
> @@ -83,6 +83,7 @@ int ccu_pll_notifier_register(struct ccu_pll_nb *pll_nb)
>         return clk_notifier_register(pll_nb->common->hw.clk,
>                                      &pll_nb->clk_nb);
>  }
> +EXPORT_SYMBOL_GPL(ccu_pll_notifier_register);

These symbol names aren't exactly specific to sunxi. Maybe we could apply
symbol namespaces?

ChenYu