netdev - Re: [PATCH] Revert "usbnet: drop unneeded check for NULL"

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Message-Id: <20120905.162046.1293290557238046936.davem@davemloft.net>
Date:	Wed, 05 Sep 2012 16:20:46 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	oliver@...kum.org
Cc:	netdev@...r.kernel.org, oneukum@...e.de
Subject: Re: [PATCH] Revert "usbnet: drop unneeded check for NULL"

From: Oliver Neukum <oliver@...kum.org>
Date: Wed,  5 Sep 2012 21:22:32 +0200

> This reverts commit 5d65878d7031b6c39054b282faceff406bb2fda9.
> The upper layers call usbnet_start_xmit() with a valid skb.
> However cdc_ncm abuses this method by calling it with NULL
> to trigger IO for the aggregated private skb holding erlier
> packets. Until cdc_ncm is fixed, the check for NULL must
> be reintroduced.
> 
> Signed-off-by: Oliver Neukum <oneukum@...e.de>

Applied, thanks Oliver.
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