linux-kernel - Re: [PATCH 4/6] usb: musb: dsps: simplify platform_get_resource_byname/devm_ioremap

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Message-ID: <5211FED3.4090102@secomea.dk>
Date:	Mon, 19 Aug 2013 13:17:39 +0200
From:	Svenning Sørensen <sss@...omea.dk>
To:	Julia Lawall <Julia.Lawall@...6.fr>
CC:	Felipe Balbi <balbi@...com>, kernel-janitors@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/6] usb: musb: dsps: simplify platform_get_resource_byname/devm_ioremap_resource

On 19-08-2013 10:51, Julia Lawall wrote:
> diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
> index 4ffbaac..f2f9710 100644
> --- a/drivers/usb/musb/musb_dsps.c
> +++ b/drivers/usb/musb/musb_dsps.c
> @@ -357,9 +357,6 @@ static int dsps_musb_init(struct musb *musb)
>   	u32 rev, val;
>   
>   	r = platform_get_resource_byname(parent, IORESOURCE_MEM, "control");
> -	if (!r)
> -		return -EINVAL;
> -
>   	reg_base = devm_ioremap_resource(dev, r);
>   	if (!musb->ctrl_base)
>   		return -EINVAL;
Not really related to Julia's patch, apart from making it more obvious 
that there's a bug here.
I believe it is reg_base that needs to be checked, right?

Svenning
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