linux-kernel - Re: [PATCH] mips: bcm63xx: add support for clk_set

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Message-ID: <20211229164005.6f5a76a0@jic23-huawei>
Date:   Wed, 29 Dec 2021 16:40:05 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Cercueil <paul@...pouillou.net>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Russell King <linux@...linux.org.uk>,
        bcm-kernel-feedback-list@...adcom.com, alsa-devel@...a-project.org
Subject: Re: [PATCH] mips: bcm63xx: add support for clk_set_parent()

On Tue, 28 Dec 2021 16:05:53 -0800
Randy Dunlap <rdunlap@...radead.org> wrote:

> The MIPS BMC63XX subarch does not provide/support clk_set_parent().
> This causes build errors in a few drivers, so add a simple implementation
> of that function so that callers of it will build without errors.
> 
> Fixes these build errors:
> 
> ERROR: modpost: "clk_set_parent" [sound/soc/jz4740/snd-soc-jz4740-i2s.ko] undefined!
> ERROR: modpost: "clk_set_parent" [sound/soc/atmel/snd-soc-atmel-i2s.ko] undefined!
> 
> Fixes: e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs." )
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Hi Randy,

As with the other one, perhaps consider a WARN_ON()
With or without that FWIW

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

> ---
>  arch/mips/bcm63xx/clk.c |    6 ++++++
>  1 file changed, 6 insertions(+)
> 
> --- linux-next-20211224.orig/arch/mips/bcm63xx/clk.c
> +++ linux-next-20211224/arch/mips/bcm63xx/clk.c
> @@ -387,6 +387,12 @@ struct clk *clk_get_parent(struct clk *c
>  }
>  EXPORT_SYMBOL(clk_get_parent);
>  
> +int clk_set_parent(struct clk *clk, struct clk *parent)
> +{
> +	return 0;
> +}
> +EXPORT_SYMBOL(clk_set_parent);
> +
>  unsigned long clk_get_rate(struct clk *clk)
>  {
>  	if (!clk)