linux-kernel - Re: [PATCH 03/13] remove dead code

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Message-Id: <201206071704.39688.oliver@neukum.org>
Date:	Thu, 7 Jun 2012 17:04:39 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	stefani@...bold.net
Cc:	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
	linux-usb@...r.kernel.org
Subject: Re: [PATCH 03/13] remove dead code

Am Donnerstag, 7. Juni 2012, 10:20:33 schrieb stefani@...bold.net:
> From: Stefani Seibold <stefani@...bold.net>
> 
> All code which use processed_urb can be eliminated.

If you eliminate it, how do you balance the completion?

	Regards
		Oliver
> 
> Signed-off-by: Stefani Seibold <stefani@...bold.net>
> ---
>  drivers/usb/usb-skeleton.c |   12 ------------
>  1 files changed, 0 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
> index 7385aa8..92cdfca 100644
> --- a/drivers/usb/usb-skeleton.c
> +++ b/drivers/usb/usb-skeleton.c
> @@ -59,7 +59,6 @@ struct usb_skel {
>  	__u8			bulk_out_endpointAddr;	/* the address of the bulk out endpoint */
>  	int			errors;			/* the last request tanked */
>  	bool			ongoing_read;		/* a read is going on */
> -	bool			processed_urb;		/* indicates we haven't processed the urb */
>  	spinlock_t		err_lock;		/* lock for errors */
>  	struct kref		kref;
>  	struct mutex		io_mutex;		/* synchronize I/O with disconnect */
> @@ -256,17 +255,6 @@ retry:
>  		 * we must finish now
>  		 */
>  		dev->bulk_in_copied = 0;
> -		dev->processed_urb = true;
> -	}
> -
> -	if (!dev->processed_urb) {
> -		/*
> -		 * the URB hasn't been processed
> -		 * do it now
> -		 */
> -		wait_for_completion(&dev->bulk_in_completion);
> -		dev->bulk_in_copied = 0;
> -		dev->processed_urb = true;
>  	}
>  
>  	/* errors must be reported */
> -- 
> 1.7.8.6
> 
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