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SubjectRe: [PATCH v2] clkdev: add devm_of_clk_get()
On Mon, Nov 28, 2016 at 06:56:52AM +0000, Kuninori Morimoto wrote:
> Current Linux has of_clk_get(), but doesn't have devm_of_clk_get().
> This patch adds it. This is based on devm_clk_get()
>
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Please put this in drivers/clk/clk-devres.c, where you'll find that
we have devm_clk_release() which is identical to your
devm_of_clk_release(). It'll also not need the dummy definition of
devm_of_clk_get().

Thanks.

> ---
> v1 -> v2
>
> - update git log
>
> drivers/clk/clkdev.c | 26 ++++++++++++++++++++++++++
> include/linux/clk.h | 7 +++++++
> 2 files changed, 33 insertions(+)
>
> diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c
> index 89cc700..93a613b 100644
> --- a/drivers/clk/clkdev.c
> +++ b/drivers/clk/clkdev.c
> @@ -55,6 +55,32 @@ struct clk *of_clk_get(struct device_node *np, int index)
> }
> EXPORT_SYMBOL(of_clk_get);
>
> +static void devm_of_clk_release(struct device *dev, void *res)
> +{
> + clk_put(*(struct clk **)res);
> +}
> +
> +struct clk *devm_of_clk_get(struct device *dev,
> + struct device_node *np, int index)
> +{
> + struct clk **ptr, *clk;
> +
> + ptr = devres_alloc(devm_of_clk_release, sizeof(*ptr), GFP_KERNEL);
> + if (!ptr)
> + return ERR_PTR(-ENOMEM);
> +
> + clk = of_clk_get(np, index);
> + if (!IS_ERR(clk)) {
> + *ptr = clk;
> + devres_add(dev, ptr);
> + } else {
> + devres_free(ptr);
> + }
> +
> + return clk;
> +}
> +EXPORT_SYMBOL(devm_of_clk_get);
> +
> static struct clk *__of_clk_get_by_name(struct device_node *np,
> const char *dev_id,
> const char *name)
> diff --git a/include/linux/clk.h b/include/linux/clk.h
> index a89ba4e..33cd540 100644
> --- a/include/linux/clk.h
> +++ b/include/linux/clk.h
> @@ -502,6 +502,8 @@ struct of_phandle_args;
>
> #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK)
> struct clk *of_clk_get(struct device_node *np, int index);
> +struct clk *devm_of_clk_get(struct device *dev,
> + struct device_node *np, int index);
> struct clk *of_clk_get_by_name(struct device_node *np, const char *name);
> struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec);
> #else
> @@ -509,6 +511,11 @@ static inline struct clk *of_clk_get(struct device_node *np, int index)
> {
> return ERR_PTR(-ENOENT);
> }
> +static inline struct clk *devm_of_clk_get(struct device *dev,
> + struct device_node *np, int index)
> +{
> + return ERR_PTR(-ENOENT);
> +}
> static inline struct clk *of_clk_get_by_name(struct device_node *np,
> const char *name)
> {
> --
> 1.9.1
>

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