Re: [PATCH v2] clk: fix clk_get_rate() always return ulong

[Mattijs Korpershoek <mkorpershoek@baylibre.com>]

On ven., déc. 15, 2023 at 15:09, Julien Masson <jmasson@baylibre.com> wrote:

> When we call clk_get_rate(), we expect to get clock rate value as
> ulong.
> In that case we should not use log_ret() macro since it use internally
> an int.
> Otherwise we may return an invalid/truncated clock rate value.
>
> Signed-off-by: Julien Masson <jmasson@baylibre.com>

Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>

> ---
> Changes in v2:
> - remove local var ret (fix warning)
> - Link to v1: https://lore.kernel.org/all/871qcj5frz.fsf@baylibre.com
> ---
>  drivers/clk/clk-uclass.c | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
>
> diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
> index 3b5e3f9c86..3cbcb2d033 100644
> --- a/drivers/clk/clk-uclass.c
> +++ b/drivers/clk/clk-uclass.c
> @@ -478,7 +478,6 @@ void clk_free(struct clk *clk)
>  ulong clk_get_rate(struct clk *clk)
>  {
>  	const struct clk_ops *ops;
> -	ulong ret;
>  
>  	debug("%s(clk=%p)\n", __func__, clk);
>  	if (!clk_valid(clk))
> @@ -488,11 +487,7 @@ ulong clk_get_rate(struct clk *clk)
>  	if (!ops->get_rate)
>  		return -ENOSYS;
>  
> -	ret = ops->get_rate(clk);
> -	if (ret)
> -		return log_ret(ret);
> -
> -	return 0;
> +	return ops->get_rate(clk);
>  }
>  
>  struct clk *clk_get_parent(struct clk *clk)
> -- 
> 2.43.0