linux-kernel - Re: [PATCH] clk: zynqmp: pll: Remove some dead code

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Message-ID: <20210507092713.GM29775@pengutronix.de>
Date:   Fri, 7 May 2021 11:27:13 +0200
From:   Michael Tretter <m.tretter@...gutronix.de>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     mturquette@...libre.com, sboyd@...nel.org, michal.simek@...inx.com,
        quanyang.wang@...driver.com, rajan.vaja@...inx.com,
        jolly.shah@...inx.com, tejasp@...inx.com,
        shubhrajyoti.datta@...inx.com, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, kernel@...gutronix.de
Subject: Re: [PATCH] clk: zynqmp: pll: Remove some dead code

On Sat, 01 May 2021 13:24:32 +0200, Christophe JAILLET wrote:
> 'clk_hw_set_rate_range()' does not return any error code and 'ret' is
> known to be 0 at this point, so this message can never be displayed.
> 
> Remove it.
> 
> Fixes: 3fde0e16d016 ("drivers: clk: Add ZynqMP clock driver")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Reviewed-by: Michael Tretter <m.tretter@...gutronix.de>

> ---
> HOWEVER, the message is about 'clk_set_rate_range()', not
> 'clk_hw_set_rate_range()'. So the message is maybe correct and the
> 'xxx_rate_range()' function incorrect.

Thanks. The function is correct, as this is a clock provider and should use
the clk_hw. Removing the message is correct.

Michael

> ---
>  drivers/clk/zynqmp/pll.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c
> index abe6afbf3407..af11e9400058 100644
> --- a/drivers/clk/zynqmp/pll.c
> +++ b/drivers/clk/zynqmp/pll.c
> @@ -331,8 +331,6 @@ struct clk_hw *zynqmp_clk_register_pll(const char *name, u32 clk_id,
>  	}
>  
>  	clk_hw_set_rate_range(hw, PS_PLL_VCO_MIN, PS_PLL_VCO_MAX);
> -	if (ret < 0)
> -		pr_err("%s:ERROR clk_set_rate_range failed %d\n", name, ret);
>  
>  	return hw;
>  }
> -- 
> 2.30.2
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> 

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