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From: "Michał Nazarewicz" <m.nazarewicz@samsung.com>
To: David Miller <davem@davemloft.net>
Cc: dbrownell@users.sourceforge.net, gregkh@suse.de,
	linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
	eric.dumazet@gmail.com
Subject: Re: [PATCH] usb: gadget: rndis: don't use dev_get_stats()
Date: Mon, 20 Sep 2010 20:58:13 +0200	[thread overview]
Message-ID: <op.vjchnbf87p4s8u@pikus> (raw)
In-Reply-To: <20100920.112727.214208208.davem@davemloft.net>

> From: Michal Nazarewicz <m.nazarewicz@samsung.com>
>> This commit removes the call to dev_get_stats() from the
>> gen_ndis_query_resp() function.  Since spin_lock_bh() was
>> added to dev_txq_stats_fold() the call started causing
>> warnings.  This is because gen_ndis_query_resp() can be
>> (indirectly) called from rndis_command_complete() which is
>> called with interrupts disabled.

On Mon, 20 Sep 2010 20:27:27 +0200, David Miller <davem@davemloft.net> wrote:
> The way this works is dev_get_stats() takes that "temp" object the
> caller provides, it writes the correct statistics into it (with any
> necessary translations), and then passes back a pointer to it.
>
> See net/core/dev.c:dev_get_stats()
>
> You must use dev_get_stats() or else the statistics won't be properly
> converted.

I'm only wondering whether it's required for RNDIS to use dev_get_stats().
I haven't found reference to netdev_queue in g_ether related code and
I noticed that u_ether.c seems to update dev->stats directly.

-- 
Best regards,                                        _     _
| Humble Liege of Serenely Enlightened Majesty of  o' \,=./ `o
| Computer Science,  Michał "mina86" Nazarewicz       (o o)
+----[mina86*mina86.com]---[mina86*jabber.org]----ooO--(_)--Ooo--

      parent reply	other threads:[~2010-09-20 18:56 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-20 18:23 [PATCH] usb: gadget: rndis: don't use dev_get_stats() Michal Nazarewicz
2010-09-20 18:27 ` David Miller
2010-09-20 18:48   ` Eric Dumazet
2010-09-20 19:00     ` Michał Nazarewicz
2010-09-20 18:58   ` Michał Nazarewicz [this message]

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