linux-kernel - Re: [PATCHv3 13/16] staging: usbip: Wrap kernel

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Message-ID: <20130930124216.GJ6192@mwanda>
Date:	Mon, 30 Sep 2013 15:42:16 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Dominik Paulus <dominik.paulus@....de>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Anthony Foiani <anthony.foiani@...il.com>,
	devel@...verdev.osuosl.org, linux-kernel@...cs.fau.de,
	linux-kernel@...r.kernel.org, tobias.polzer@....de,
	Ilija Hadzic <ihadzic@...earch.bell-labs.com>
Subject: Re: [PATCHv3  13/16] staging: usbip: Wrap kernel_sendmsg()/recvmsg()

On Sat, Sep 28, 2013 at 07:42:50PM +0200, Dominik Paulus wrote:
> @@ -352,34 +352,29 @@ int usbip_recv(struct socket *sock, void *buf, int size)
>  
>  	usbip_dbg_xmit("enter\n");
>  
> -	if (!sock || !buf || !size) {
> -		pr_err("invalid arg, sock %p buff %p size %d\n", sock, buf,
> +	if (!ud || !buf || !size) {
> +		pr_err("invalid arg, ud %p buff %p size %d\n", ud, buf,
>  		       size);

"size" can fit on the first line now.

		pr_err("invalid arg, ud %p buff %p size %d\n", ud, buf, size);

>  		return -EINVAL;
>  	}
>  
> -	do {
> -		sock->sk->sk_allocation = GFP_NOIO;
> -		iov.iov_base    = buf;
> -		iov.iov_len     = size;
> -		msg.msg_name    = NULL;
> -		msg.msg_namelen = 0;
> -		msg.msg_control = NULL;
> -		msg.msg_controllen = 0;
> -		msg.msg_namelen    = 0;
> -		msg.msg_flags      = MSG_NOSIGNAL;
> -
> -		result = kernel_recvmsg(sock, &msg, &iov, 1, size, MSG_WAITALL);
> -		if (result <= 0) {
> -			pr_debug("receive sock %p buf %p size %u ret %d total %d\n",
> -				 sock, buf, size, result, total);
> -			goto err;
> -		}
> -
> -		size -= result;
> -		buf += result;
> -		total += result;
> -	} while (size > 0);
> +	ud->tcp_socket->sk->sk_allocation = GFP_NOIO;
> +	iov.iov_base    = buf;
> +	iov.iov_len     = size;
> +	msg.msg_name    = NULL;
> +	msg.msg_namelen = 0;
> +	msg.msg_control = NULL;
> +	msg.msg_controllen = 0;
> +	msg.msg_namelen    = 0;
> +	msg.msg_flags      = MSG_NOSIGNAL;
> +
> +	result = usbip_recvmsg(ud, &msg, &iov, 1, size, MSG_WAITALL);
> +

Don't put a blank line here.

> +	if (result < 0) {
> +		pr_debug("receive sock %p buf %p size %u ret %d total %d\n",
> +			 ud->tcp_socket, buf, size, result, total);
> +		return result;
> +	}
>  

regards,
dan carpenter
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