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Date:   Tue, 24 Apr 2018 18:32:53 +0100
From:   Mark Brown <broonie@kernel.org>
To:     Stefan Potyra <Stefan.Potyra@elektrobit.com>
Cc:     Florian Fainelli <florian.fainelli@broadcom.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        bcm-kernel-feedback-list@broadcom.com, linux-spi@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Jonas Gorski <jonas.gorski@gmail.com>,
        ldv-project@linuxtesting.org, sil2review@lists.osadl.org
Subject: Re: [PATCH v2] spi/bcm63xx-hspi: Enable the clock before calling
 clk_get_rate().
Message-ID: <20180424173253.GF22073@sirena.org.uk>
References: <20180419130358.r7dva6owy2izyfus@agrajag.zerfleddert.de>
 <dfb9c72c-6289-a2ea-c3d4-c59f5e3c799c@broadcom.com>
 <20180424161605.GA17825@er01809n.ebgroup.elektrobit.com>
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On Tue, Apr 24, 2018 at 06:16:05PM +0200, Stefan Potyra wrote:

> +	ret =3D clk_prepare_enable(clk);
> +	if (ret)
> +		return ret;
> +
>  	rate =3D clk_get_rate(clk);
>  	if (!rate) {
>  		struct clk *pll_clk =3D devm_clk_get(dev, "pll");
> @@ -364,10 +368,6 @@ static int bcm63xx_hsspi_probe(struct platform_devic=
e *pdev)
>  			return -EINVAL;
>  	}
> =20
> -	ret =3D clk_prepare_enable(clk);
> -	if (ret)
> -		return ret;
> -

We can return an error after the clock was enabled, this will leake the
clock if that happens.

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