linux-kernel - Re: [PATCH] clk: Show clock rate instead of return value

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Message-ID: <20150413045624.19585.73264@quantum>
Date:	Sun, 12 Apr 2015 21:56:24 -0700
From:	Michael Turquette <mturquette@...aro.org>
To:	Chanwoo Choi <cw00.choi@...sung.com>, sboyd@...eaurora.org
Cc:	linux-kernel@...r.kernel.org,
	"Chanwoo Choi" <cw00.choi@...sung.com>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>
Subject: Re: [PATCH] clk: Show clock rate instead of return value

+Sylwester

Quoting Chanwoo Choi (2015-04-01 23:40:36)
> This patch shows the current clock rate instead of return value
> when clk_set_rate() return fail because log message means the clock rate.
> 
> Cc: Mike Turquette <mturquette@...aro.org>
> Cc: Stephen Boyd <sboyd@...eaurora.org>
> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
> ---
>  drivers/clk/clk-conf.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/clk-conf.c b/drivers/clk/clk-conf.c
> index aad4796..fb1ee65 100644
> --- a/drivers/clk/clk-conf.c
> +++ b/drivers/clk/clk-conf.c
> @@ -107,8 +107,8 @@ static int __set_clk_rates(struct device_node *node, bool clk_supplier)
>  
>                         rc = clk_set_rate(clk, rate);
>                         if (rc < 0)
> -                               pr_err("clk: couldn't set %s clock rate: %d\n",
> -                                      __clk_get_name(clk), rc);
> +                               pr_err("clk: couldn't set %s clock rate: %ld\n",
> +                                      __clk_get_name(clk), clk_get_rate(clk));

Change seems OK, but what was Sylwester's original intent? We can always
look up the original/current rate in sysfs, but getting the error code
printed might be useful for debugging...

Regards,
Mike

>                         clk_put(clk);
>                 }
>                 index++;
> -- 
> 1.8.5.5
> 
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