[PATCH 2/2] mmc: sdhci-pxav3: Print ret value on error from sdhci_add_host() fn

Vaibhav Hiremath vaibhav.hiremath at linaro.org
Tue Sep 1 23:37:01 PDT 2015



On Wednesday 02 September 2015 02:07 AM, Joe Perches wrote:
> 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.
>

Not for everything.
No error message for -EPROBE_DEFER.

>> 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.
>

Yes, true.
Ho about, adding pr_err into sdhci_add_host for -EPROBE_DEFER.

Thanks,
Vaibhav



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