netdev - RE: [PATCH] net: fix bogus cast in skb_pagelen() and use unsigned variables

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Date:   Wed, 23 Nov 2016 12:49:41 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Alexey Dobriyan' <adobriyan@...il.com>,
        "davem@...emloft.net" <davem@...emloft.net>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH] net: fix bogus cast in skb_pagelen() and use unsigned
 variables

From: Alexey Dobriyan
> Sent: 19 November 2016 01:08
...
> -	for (i = (int)skb_shinfo(skb)->nr_frags - 1; i >= 0; i--)
> +	for (i = skb_shinfo(skb)->nr_frags - 1; (int)i >= 0; i--)
>  		len += skb_frag_size(&skb_shinfo(skb)->frags[i]);

Think I'd use:
	for (i = skb_shinfo(skb)->nr_frags; i-- != 0; )

	David