linux-kernel - Re: [PATCH] usb: bdc: Remove duplicate error message in bdc

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Date:   Sun, 27 Sep 2020 15:45:50 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Tang Bin <tangbin@...s.chinamobile.com>
Cc:     balbi@...nel.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Zhang Shengju <zhangshengju@...s.chinamobile.com>
Subject: Re: [PATCH] usb: bdc: Remove duplicate error message in bdc_probe()

On Sun, Sep 27, 2020 at 09:42:18PM +0800, Tang Bin wrote:
> In this function, we don't need dev_err() message because
> when something goes wrong, devm_platform_ioremap_resource()
> can print an error message itself, so remove the redundant
> one.
> 
> Signed-off-by: Zhang Shengju <zhangshengju@...s.chinamobile.com>
> Signed-off-by: Tang Bin <tangbin@...s.chinamobile.com>
> ---
>  drivers/usb/gadget/udc/bdc/bdc_core.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c
> index 02a3a7746..9454f179e 100644
> --- a/drivers/usb/gadget/udc/bdc/bdc_core.c
> +++ b/drivers/usb/gadget/udc/bdc/bdc_core.c
> @@ -508,10 +508,8 @@ static int bdc_probe(struct platform_device *pdev)
>  	bdc->clk = clk;
>  
>  	bdc->regs = devm_platform_ioremap_resource(pdev, 0);
> -	if (IS_ERR(bdc->regs)) {
> -		dev_err(dev, "ioremap error\n");
> +	if (IS_ERR(bdc->regs))
>  		return -ENOMEM;

Why not return the error given to us?

thanks,

greg k-h