From: "John W. Linville" <linville@tuxdriver.com>
To: Dan Williams <dcbw@redhat.com>
Cc: Wang Chen <wangchen@cn.fujitsu.com>,
"David S. Miller" <davem@davemloft.net>,
Jeff Garzik <jgarzik@pobox.com>, NETDEV <netdev@vger.kernel.org>,
linux-wireless@vger.kernel.org
Subject: Re: [PATCH 15/18] netdevice libertas: Fix directly reference of netdev->priv
Date: Fri, 31 Oct 2008 15:17:11 -0400 [thread overview]
Message-ID: <20081031191711.GE4310@tuxdriver.com> (raw)
In-Reply-To: <1220634465.6430.16.camel@localhost.localdomain>
On Fri, Sep 05, 2008 at 01:07:45PM -0400, Dan Williams wrote:
> On Fri, 2008-09-05 at 11:28 +0800, Wang Chen wrote:
> > We have some reasons to kill netdev->priv:
> > 1. netdev->priv is equal to netdev_priv().
> > 2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously
> > netdev_priv() is more flexible than netdev->priv.
> > But we cann't kill netdev->priv, because so many drivers reference to it
> > directly.
> >
> > OK, becasue Dave S. Miller said, "every direct netdev->priv usage is a bug",
> > and I want to kill netdev->priv later, I decided to convert all the direct
> > reference of netdev->priv first.
> >
> > Different to readonly reference of netdev->priv, in this driver, netdev->priv
> > was changed. I use netdev->ml_priv to replace netdev->priv.
>
> Same comment as the other two; any reason we can't use netdev_priv()
> instead of ->ml_priv? That would be preferable.
Actually, I think this one was OK -- the two ml_priv uses were for
the extra mesh and rtap devices, which point back to the already
allocated priv data for the main device.
John
--
John W. Linville Linux should be at the core
linville@tuxdriver.com of your literate lifestyle.
next prev parent reply other threads:[~2008-10-31 19:31 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <48C0A219.2030004@cn.fujitsu.com>
2008-09-05 3:27 ` [PATCH 14/18] netdevice airo: Convert directly reference of netdev->priv to netdev->ml_priv Wang Chen
2008-09-05 12:50 ` John W. Linville
2008-09-05 17:06 ` Dan Williams
2008-09-06 9:37 ` Wang Chen
2008-09-26 8:37 ` Wang Chen
2008-09-05 3:28 ` [PATCH 15/18] netdevice libertas: Fix directly reference of netdev->priv Wang Chen
2008-09-05 17:07 ` Dan Williams
2008-10-31 19:17 ` John W. Linville [this message]
2008-09-05 3:29 ` [PATCH 16/18] netdevice zd1201: Convert directly reference of netdev->priv to netdev->ml_priv Wang Chen
2008-09-05 12:56 ` John W. Linville
2008-10-31 18:22 ` John W. Linville
2008-10-31 18:48 ` [PATCH] netdevice zd1201: Convert directly reference of netdev->priv to netdev_priv() John W. Linville
2008-10-31 19:00 ` Stephen Hemminger
2008-11-03 2:06 ` Wang Chen
2008-12-18 6:53 ` [PATCH -next] netdevice zd1201: Use after free Wang Chen
2008-12-18 13:58 ` John W. Linville
2008-12-19 3:37 ` David Miller
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