Re: [PATCH v1] chipidea: issue message when some calls fail in ->probe()

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On Thu, Nov 13, 2014 at 05:59:47PM +0200, Andy Shevchenko wrote:
> There is no message when PHY is not enabled, IRQ line can't be acquired, or
> debugfs registration fails. This patch adds the messages.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> ---
>  drivers/usb/chipidea/core.c | 16 ++++++++++++----
>  1 file changed, 12 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> index c57448a..ffd2457 100644
> --- a/drivers/usb/chipidea/core.c
> +++ b/drivers/usb/chipidea/core.c
> @@ -659,8 +659,10 @@ static int ci_hdrc_probe(struct platform_device *pdev)
>  
>  		/* if both generic PHY and USB PHY layers aren't enabled */
>  		if (PTR_ERR(ci->phy) == -ENOSYS &&
> -				PTR_ERR(ci->usb_phy) == -ENXIO)
> +				PTR_ERR(ci->usb_phy) == -ENXIO) {
> +			dev_err(dev, "PHY and USB PHY layers aren't enabled\n");
>  			return -ENXIO;
> +		}
>  
>  		if (IS_ERR(ci->phy) && IS_ERR(ci->usb_phy))
>  			return -EPROBE_DEFER;
> @@ -761,16 +763,22 @@ static int ci_hdrc_probe(struct platform_device *pdev)
>  	platform_set_drvdata(pdev, ci);
>  	ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->platdata->name,
>  			  ci);
> -	if (ret)
> +	if (ret) {
> +		dev_err(dev, "can't acquire IRQ line %d\n", ci->irq);
>  		goto stop;
> +	}
>  
>  	if (ci_otg_is_fsm_mode(ci))
>  		ci_hdrc_otg_fsm_start(ci);
>  
>  	ret = dbg_create_files(ci);
> -	if (!ret)
> -		return 0;
> +	if (ret) {
> +		dev_err(dev, "can't register debugfs files\n");
> +		goto release_irq;
> +	}
> +	return 0;
>  
> +release_irq:
>  	free_irq(ci->irq, ci);
>  stop:
>  	ci_role_destroy(ci);
> -- 
> 2.1.3
> 

Yes, I find the probe does not show warning for -ENODEV and -ENXIO,
I have changed request_irq to devm_request_irq at my next tree,
rebase it, and send your v2 please.

-- 

Best Regards,
Peter Chen
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