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Date: Wed, 14 Aug 2013 17:18:51 +0200 (CEST)
From: Julia Lawall <julia.lawall@lip6.fr>
Subject: Re: question about netif_rx
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To: Rami Rosen <roszenrami@gmail.com>
Cc: Francois Romieu <romieu@fr.zoreil.com>, David Shwatrz <dshwatrz@gmail.com>, Julia Lawall <julia.lawall@lip6.fr>, grant.likely@linaro.org, rob.herring@calxeda.com, Netdev <netdev@vger.kernel.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, devicetree@vger.kernel.org
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On Wed, 14 Aug 2013, Rami Rosen wrote:

> Hi,
> BTW, this is not the only NAPI issue here. When looking into cleanup
> of resources in this driver, a call to netif_napi_del() is missing
> (though there is a call to  napi_disable(), which is not enough for
> proper cleanup).

Actually, netif_napi_del seems to be quite underused.  At least
approximately, I would assume that every file that uses netif_napi_add
should use netif_napi_del at least once, and possible more times.  But I
find 118 .c files that use netif_napi_add, and only 35 that use
netif_napi_del.

Are there some cases where it might not be needed?

julia