netdev - Re: [PATCH] net: pegasus: remove unused variables and labels

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Date:	Fri, 20 May 2016 11:58:47 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Petko Manolov <petkan@...-labs.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	"xypron.glpk@....de" <xypron.glpk@....de>,
	linux-usb@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, oneukum@...e.com, linux@...ck-us.net
Subject: Re: [PATCH] net: pegasus: remove unused variables and labels

On Friday 20 May 2016 12:32:23 Petko Manolov wrote:
> Guys, come on.  This code is not dead.  This code is executed every time an 
> ethernet packet is received.  It takes care of various error statistics. More 
> importantly, it sends the actual (reported by the adapter) packet length to the 
> network layer along with the packet.
> 
> This patch removes skb_put() and netif_rx() calls and effectively kills the RX 
> path.  Not to mention that the driver was not even compiled before sending the 
> patch upstream.
> 
> The only sensible, although cosmetic, change would be to replace:
> 
>         if (!count || count < 4)
> 
> with
> 
>         if (count < 4)
> 
> even though GCC takes care and it optimizes away "!count" condition.
> 
> Please revert this patch before Linus pulls from the network tree.
> 

Agreed. I failed to check the commit that introduced the warning for
the more serious problem.

Please revert e00be9e4d0ff, it just makes no sense.

	Arnd