linux-kernel - Re: [PATCH 2/2] mmc: sdhci-pxav3: Print ret value on error from sdhci_add

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Date:	Tue, 01 Sep 2015 13:37:18 -0700
From:	Joe Perches <joe@...ches.com>
To:	Vaibhav Hiremath <vaibhav.hiremath@...aro.org>
Cc:	linux-mmc@...r.kernel.org, ulf.hansson@...aro.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/2] mmc: sdhci-pxav3: Print ret value on error from
 sdhci_add_host() fn

On Wed, 2015-09-02 at 00:54 +0530, Vaibhav Hiremath wrote:
> Return value would give clear information about the actual root-cause
> of the failure.

I'm not sure why that is as nearly every error path in
sdhci_add_host emits a message.

> diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
[]
> @@ -455,7 +455,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
>  
>  	ret = sdhci_add_host(host);
>  	if (ret) {
> -		dev_err(&pdev->dev, "failed to add host\n");
> +		dev_err(&pdev->dev, "failed to add host ret - %d\n", ret);
>  		goto err_add_host;
>  	}
>  

If this is really desirable, there are many other callers of
sdhci_add_host with error messages just like this one.

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