linux-kernel - Re: [PATCH 01/19] clk: at91: clk-generated: continue if __clk_determine

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Date:   Fri, 17 Jul 2020 11:09:59 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Claudiu Beznea <claudiu.beznea@...rochip.com>
Cc:     mturquette@...libre.com, sboyd@...nel.org,
        nicolas.ferre@...rochip.com, ludovic.desroches@...rochip.com,
        bbrezillon@...nel.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 01/19] clk: at91: clk-generated: continue if
 __clk_determine_rate() returns error

On 15/07/2020 14:24:09+0300, Claudiu Beznea wrote:
> __clk_determine_rate() may return error. Skip the current step
> in case of error.
> 
> Fixes: 1a1a36d72e3d3 ("clk: at91: clk-generated: make gclk determine audio_pll rate")
> Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@...tlin.com>

> ---
>  drivers/clk/at91/clk-generated.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/at91/clk-generated.c b/drivers/clk/at91/clk-generated.c
> index 44a46dcc0518..995a13133cfb 100644
> --- a/drivers/clk/at91/clk-generated.c
> +++ b/drivers/clk/at91/clk-generated.c
> @@ -170,7 +170,8 @@ static int clk_generated_determine_rate(struct clk_hw *hw,
>  
>  	for (div = 1; div < GENERATED_MAX_DIV + 2; div++) {
>  		req_parent.rate = req->rate * div;
> -		__clk_determine_rate(parent, &req_parent);
> +		if (__clk_determine_rate(parent, &req_parent))
> +			continue;
>  		clk_generated_best_diff(req, parent, req_parent.rate, div,
>  					&best_diff, &best_rate);
>  
> -- 
> 2.7.4
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com