linux-kernel - Re: [MXS MMC 4/5] Check the return codes of clk_enable() and mxs_reset

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Date:	Tue, 6 Dec 2011 20:12:03 +0100
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	Lothar Waßmann <LW@...O-electronics.de>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Shawn Guo <shawn.guo@...aro.org>,
	Sascha Hauer <kernel@...gutronix.de>,
	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Chris Ball <cjb@...top.org>
Subject: Re: [MXS MMC 4/5] Check the return codes of clk_enable() and
 mxs_reset_block()

On Tue, Dec 06, 2011 at 02:41:29PM +0100, Lothar Waßmann wrote:
> Add an int return value to mxs_mmc_reset(), so that the return code of
> mxs_reset_block() can be promoted to the caller.
> Also check the return code of clk_enable() in the probe function.
> 
> Signed-off-by: Lothar Waßmann <LW@...O-electronics.de>
> -	clk_enable(host->clk);
> +	ret = clk_enable(host->clk);
> +	if (ret) {
> +		dev_err(mmc_dev(host->mmc),
> +			"%s: failed to enable clock: %d\n", __func__, ret);
> +		goto out_clk_put;
> +	}
>  
> -	mxs_mmc_reset(host);
> +	ret = mxs_mmc_reset(host);
> +	if (ret) {
> +		dev_err(mmc_dev(host->mmc),
> +			"%s: failed to reset controller: %d\n", __func__, ret);
> +		goto out_clk_put;
> +	}

Why __func__ here? dev_err and the msg itself should be indication enough?

Otherwise

Acked-by: Wolfram Sang <w.sang@...gutronix.de>

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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