netdev - Re: [Patch net-next] net/mlx4_core: match pci_device

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Date:	Tue, 8 Apr 2014 19:51:22 +0300
From:	Or Gerlitz <or.gerlitz@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	Or Gerlitz <ogerlitz@...lanox.com>,
	Wei Yang <weiyang@...ux.vnet.ibm.com>,
	Yevgeny Petrilin <yevgenyp@...lanox.com>,
	Amir Vadai <amirv@...lanox.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [Patch net-next] net/mlx4_core: match pci_device_id including dynids

On Tue, Apr 8, 2014 at 7:25 PM, David Miller <davem@...emloft.net> wrote:
>
> From: Or Gerlitz <ogerlitz@...lanox.com>
> Date: Tue, 8 Apr 2014 09:48:30 +0300
>
> > On 07/04/2014 21:43, David Miller wrote:
> >> From: Wei Yang <weiyang@...ux.vnet.ibm.com>
> >> Date: Sun,  6 Apr 2014 10:07:30 +0800
> >>
> >>> Fix issue introduced by commit: 97a5221 "net/mlx4_core: pass
> >>> pci_device_id.driver_data to __mlx4_init_one during reset".
> >>>
> >>> pci_match_id() just match the static pci_device_id, which may return
> >>> NULL if
> >>> someone binds the driver to a device manually using
> >>> /sys/bus/pci/drivers/.../new_id.
> >>>
> >>> This patch wrap up a helper function __mlx4_remove_one() which does
> >>> the tear
> >>> down function but preserve the drv_data. Functions like
> >>> mlx4_pci_err_detected() and mlx4_restart_one() will call this one with
> >>> out
> >>> releasing drvdata.
> >>>
> >>> Tested on ConnectX-3.
> >>>
> >>> CC: Bjorn Helgaas <bhelgaas@...gle.com>
> >>> CC: Amir Vadai <amirv@...lanox.com>
> >>> Signed-off-by: Wei Yang <weiyang@...ux.vnet.ibm.com>
> >> Please resubmit this when the net-next tree opens back up, thanks.
> >
> > Dave, this patch is for net, since it fixes an issue in the current
> > code (actually it relates to a patch
> > that was merged after 3.14-rc7, so it would eventually might go to
> > -stable too). The author wasn't very
> > familiar with the exact differences/nature of net vs. net-next, so it
> > might created some confusion here, I'v
> > sent him few private notes to explain how things go...
>
> Then please resubmit this patch with the proper subject line, th ank you.


We've sent some feedback on the patch to the author along with crash
net vs. net-next course, I really hope V1 he will post with the proper
tag...
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