linux-kernel - Re: [PATCH][Resend] USB: Remove test for NULL that'll never happen in usb

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Date:	Mon, 1 Aug 2011 15:10:19 -0700
From:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
To:	Jesper Juhl <jj@...osbits.net>
Cc:	linux-kernel@...r.kernel.org,
	Alan Stern <stern@...land.harvard.edu>,
	linux-usb@...r.kernel.org, Greg Kroah-Hartman <gregkh@...e.de>,
	Andiry Xu <andiry.xu@....com>, Luben Tuikov <ltuikov@...oo.com>
Subject: Re: [PATCH][Resend] USB: Remove test for NULL that'll never happen
 in usb_disconnect()

Hi Jesper,

You probably need to send this directly to Greg, instead of to the list.
I'm not sure if Greg's still on vacation, so resend in a couple days if
you don't hear from him.

Sarah Sharp

On Tue, Aug 02, 2011 at 12:03:24AM +0200, Jesper Juhl wrote:
> In drivers/usb/core/hub.c::usb_disconnect(), 'udev' will never be
> NULL, so remove the test and printing of debug message.
> 
> Signed-off-by: Jesper Juhl <jj@...osbits.net>
> Acked-by: Alan Stern <stern@...land.harvard.edu>
> ---
>  drivers/usb/core/hub.c |    5 -----
>  1 files changed, 0 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
> index a428aa0..99fff6b 100644
> --- a/drivers/usb/core/hub.c
> +++ b/drivers/usb/core/hub.c
> @@ -1636,11 +1636,6 @@ void usb_disconnect(struct usb_device **pdev)
>  	int			i;
>  	struct usb_hcd		*hcd = bus_to_hcd(udev->bus);
>  
> -	if (!udev) {
> -		pr_debug ("%s nodev\n", __func__);
> -		return;
> -	}
> -
>  	/* mark the device as inactive, so any further urb submissions for
>  	 * this device (and any of its children) will fail immediately.
>  	 * this quiesces everything except pending urbs.
> -- 
> 1.7.6
> 
> 
> -- 
> Jesper Juhl <jj@...osbits.net>       http://www.chaosbits.net/
> Don't top-post http://www.catb.org/jargon/html/T/top-post.html
> Plain text mails only, please.
> 
> --
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