Re: [PATCH v3 15/31] clk: mediatek: Implement mtk_clk_unregister_fixed_clks() API

Chun-Jie Chen
2022-02-15T06:38:40Z

On Tue, 2022-02-08 at 20:40 +0800, Chen-Yu Tsai wrote:
> mtk_clk_register_fixed_clks(), as the name suggests, is used to
> register
> a given list of fixed rate clks. However it is lacking a counterpart
> unregister API.
>
> Implement said unregister API so that the various clock platform
> drivers
> can utilize it to do proper unregistration, cleanup and removal.
>
> In the header file, the register function's declaration is also
> reformatted to fit code style guidelines.
>
> Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
> Reviewed-by: Miles Chen <miles.chen@mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@collabora.com>

Reviewed-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
> ---
> drivers/clk/mediatek/clk-mtk.c | 20 ++++++++++++++++++++
> drivers/clk/mediatek/clk-mtk.h | 6 ++++--
> 2 files changed, 24 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/clk/mediatek/clk-mtk.c
> b/drivers/clk/mediatek/clk-mtk.c
> index 0c5db3c71fdd..7c0d5706eed7 100644
> --- a/drivers/clk/mediatek/clk-mtk.c
> +++ b/drivers/clk/mediatek/clk-mtk.c
> @@ -80,6 +80,26 @@ void mtk_clk_register_fixed_clks(const struct
> mtk_fixed_clk *clks,
> }
> EXPORT_SYMBOL_GPL(mtk_clk_register_fixed_clks);
>
> +void mtk_clk_unregister_fixed_clks(const struct mtk_fixed_clk *clks,
> int num,
> + struct clk_onecell_data *clk_data)
> +{
> + int i;
> +
> + if (!clk_data)
> + return;
> +
> + for (i = num; i > 0; i--) {
> + const struct mtk_fixed_clk *rc = &clks[i - 1];
> +
> + if (IS_ERR_OR_NULL(clk_data->clks[rc->id]))
> + continue;
> +
> + clk_unregister_fixed_rate(clk_data->clks[rc->id]);
> + clk_data->clks[rc->id] = ERR_PTR(-ENOENT);
> + }
> +}
> +EXPORT_SYMBOL_GPL(mtk_clk_unregister_fixed_clks);
> +
> void mtk_clk_register_factors(const struct mtk_fixed_factor *clks,
> int num, struct clk_onecell_data *clk_data)
> {
> diff --git a/drivers/clk/mediatek/clk-mtk.h
> b/drivers/clk/mediatek/clk-mtk.h
> index 168220f85489..cc7f920eabb4 100644
> --- a/drivers/clk/mediatek/clk-mtk.h
> +++ b/drivers/clk/mediatek/clk-mtk.h
> @@ -34,8 +34,10 @@ struct mtk_fixed_clk {
> .rate = _rate, \
> }
>
> -void mtk_clk_register_fixed_clks(const struct mtk_fixed_clk *clks,
> - int num, struct clk_onecell_data *clk_data);
> +void mtk_clk_register_fixed_clks(const struct mtk_fixed_clk *clks,
> int num,
> + struct clk_onecell_data *clk_data);
> +void mtk_clk_unregister_fixed_clks(const struct mtk_fixed_clk *clks,
> int num,
> + struct clk_onecell_data *clk_data);
>
> struct mtk_fixed_factor {
> int id;