linux-kernel - Re: [PATCH v2 2/2] i2c: designware: Add support for a bus clock

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Message-ID: <20190219202527.rz45advkmpyzvaf4@katana>
Date:   Tue, 19 Feb 2019 21:25:27 +0100
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Gareth Williams <gareth.williams.jx@...esas.com>
Cc:     Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        linux-i2c@...r.kernel.org,
        Phil Edworthy <phil.edworthy@...esas.com>,
        linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH v2 2/2] i2c: designware: Add support for a bus clock


> -	if (prepare)
> +	if (prepare) {
> +		/* Optional bus clock */
> +		ret = clk_prepare_enable(dev->busclk);
> +		if (ret)
> +			return ret;
> +
>  		return clk_prepare_enable(dev->clk);

This leaves 'busclk' enabled when the other clock fails.


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