linux-kernel - Re: [PATCH] MIPS: ralink: define stubs for clk_set

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Date:   Tue, 16 Mar 2021 19:01:47 +0100
From:   John Crispin <john@...ozen.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     thierry.reding@...il.com, linux-tegra@...r.kernel.org,
        balbi@...nel.org, linux-usb@...r.kernel.org, digetx@...il.com,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] MIPS: ralink: define stubs for clk_set_parent to fix
 compile testing


On 16.03.21 18:57, Krzysztof Kozlowski wrote:
> The Ralink MIPS platform does not use Common Clock Framework and does
> not define certain clock operations leading to compile test failures:
>
>      /usr/bin/mips-linux-gnu-ld: drivers/usb/phy/phy-tegra-usb.o: in function `tegra_usb_phy_init':
>      phy-tegra-usb.c:(.text+0x1dd4): undefined reference to `clk_get_parent'
>
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Acked-by John Crispin <john@...ozen.org>
> ---
>   arch/mips/ralink/clk.c | 14 ++++++++++++++
>   1 file changed, 14 insertions(+)
>
> diff --git a/arch/mips/ralink/clk.c b/arch/mips/ralink/clk.c
> index 2f9d5acb38ea..8387177a47ef 100644
> --- a/arch/mips/ralink/clk.c
> +++ b/arch/mips/ralink/clk.c
> @@ -70,6 +70,20 @@ long clk_round_rate(struct clk *clk, unsigned long rate)
>   }
>   EXPORT_SYMBOL_GPL(clk_round_rate);
>   
> +int clk_set_parent(struct clk *clk, struct clk *parent)
> +{
> +	WARN_ON(clk);
> +	return -1;
> +}
> +EXPORT_SYMBOL(clk_set_parent);
> +
> +struct clk *clk_get_parent(struct clk *clk)
> +{
> +	WARN_ON(clk);
> +	return NULL;
> +}
> +EXPORT_SYMBOL(clk_get_parent);
> +
>   void __init plat_time_init(void)
>   {
>   	struct clk *clk;