linux-kernel - Re: [PATCH v2] clk: let of_clk_get_parent_name() fail for invalid clock-indices

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Date:	Mon, 30 Nov 2015 17:48:55 +0900
From:	Masahiro Yamada <yamada.masahiro@...ionext.com>
To:	linux-clk@...r.kernel.org
Cc:	Masahiro Yamada <yamada.masahiro@...ionext.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Michael Turquette <mturquette@...libre.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-gpio@...r.kernel.org
Subject: Re: [PATCH v2] clk: let of_clk_get_parent_name() fail for invalid clock-indices

2015-11-30 17:46 GMT+09:00 Masahiro Yamada <yamada.masahiro@...ionext.com>:
> Currently, of_clk_get_parent_name() returns a wrong parent clock name
> when "clock-indices" property exists and the target index is not
> found in the property.  In this case, NULL should be returned.
>
> For example,
>
>         oscillator {
>                 compatible = "myclocktype";
>                 #clock-cells = <1>;
>                 clock-indices = <1>, <3>;
>                 clock-output-names = "clka", "clkb";
>         };
>
>         consumer {
>                 compatible = "myclockconsumer";
>                 clocks = <&oscillator 0>, <&oscillator 1>;
>         };
>
> Currently, of_clk_get_parent_name(consumer_np, 0) returns "clka"
> (and of_clk_get_parent_name(consumer_np, 1) also returns "clka",
> this is correct).   Because the "clock-indices" in the clock parent
> does not contain <0>, of_clk_get_parent_name(consumer_np, 0) should
> return NULL.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>



I've sent v2 to linux-gpio@...r.kernel.org by mistake.

My intention was to send it linux-clk@...r.kernel.org.


Sorry, Linus Walleij.




-- 
Best Regards
Masahiro Yamada
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