linux-kernel - Re: [PATCH 23/33] drivers/usb/host: don't check resource with devm_ioremap

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Date:	Thu, 16 May 2013 10:27:49 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Wolfram Sang <wsa@...-dreams.de>
cc:	linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-usb@...r.kernel.org>
Subject: Re: [PATCH 23/33] drivers/usb/host: don't check resource with
 devm_ioremap_resource

On Thu, 16 May 2013, Wolfram Sang wrote:

> devm_ioremap_resource does sanity checks on the given resource. No need to
> duplicate this in the driver.
> 
> Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
> ---
>  drivers/usb/host/ohci-nxp.c |    6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/drivers/usb/host/ohci-nxp.c b/drivers/usb/host/ohci-nxp.c
> index f4988fb..f303cb0 100644
> --- a/drivers/usb/host/ohci-nxp.c
> +++ b/drivers/usb/host/ohci-nxp.c
> @@ -300,12 +300,6 @@ static int usb_hcd_nxp_probe(struct platform_device *pdev)
>  	}
>  
>  	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	if (!res) {
> -		dev_err(&pdev->dev, "Failed to get MEM resource\n");
> -		ret =  -ENOMEM;
> -		goto out8;
> -	}
> -
>  	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
>  	if (IS_ERR(hcd->regs)) {
>  		ret = PTR_ERR(hcd->regs);
> 

Acked-by: Alan Stern <stern@...land.harvard.edu>

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