linux-kernel - Re: [PATCH] clk: at91: fix num_parents test in at91sam9260 slow clk implementation

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Message-ID: <20140902214506.5251.1412@quantum>
Date:	Tue, 02 Sep 2014 14:45:06 -0700
From:	Mike Turquette <mturquette@...aro.org>
To:	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	"Nicolas Ferre" <nicolas.ferre@...el.com>,
	"Jean-Christophe Plagniol-Villard" <plagnioj@...osoft.com>,
	"Alexandre Belloni" <alexandre.belloni@...e-electrons.com>,
	"Andrew Victor" <linux@...im.org.za>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	"Boris BREZILLON" <boris.brezillon@...e-electrons.com>
Subject: Re: [PATCH] clk: at91: fix num_parents test in at91sam9260 slow clk
 implementation

Quoting Boris BREZILLON (2014-09-02 08:27:51)
> The slow clk block provided by at91sam9260 and derived SoCs should always
> have 2 parents.
> 
> Signed-off-by: Boris BREZILLON <boris.brezillon@...e-electrons.com>
> ---
> 
> Hello Mike,
> 
> Could you take this fix for the next 3.17 rc ?
> Without this fix you won't be able to use programmable clks (the slow
> clk is one of the parents of prog clks), and these prog clks are used,
> among other things, to provide clks to external audio chips.
> 
> No need to backport this fix to previous stable releases, as CCF support
> for at91sam9260 (and derived) SoCs only appeared in 3.17.

Pulled into clk-fixes.

Regards,
Mike

> 
> Best Regards,
> 
> Boris
> 
>  drivers/clk/at91/clk-slow.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/at91/clk-slow.c b/drivers/clk/at91/clk-slow.c
> index 0300c46..32f7c1b 100644
> --- a/drivers/clk/at91/clk-slow.c
> +++ b/drivers/clk/at91/clk-slow.c
> @@ -447,7 +447,7 @@ void __init of_at91sam9260_clk_slow_setup(struct device_node *np,
>         int i;
>  
>         num_parents = of_count_phandle_with_args(np, "clocks", "#clock-cells");
> -       if (num_parents <= 0 || num_parents > 1)
> +       if (num_parents != 2)
>                 return;
>  
>         for (i = 0; i < num_parents; ++i) {
> -- 
> 1.9.1
> 
--
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