netdev - Re: [PATCH net-next] net/mlx4_core: Handle null return by pci_match

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Message-ID: <20140331070101.GA12529@richard>
Date:	Mon, 31 Mar 2014 15:01:01 +0800
From:	Wei Yang <weiyang@...ux.vnet.ibm.com>
To:	Or Gerlitz <or.gerlitz@...il.com>
Cc:	Wei Yang <weiyang@...ux.vnet.ibm.com>,
	Amir Vadai <amirv@...lanox.com>,
	"David S. Miller" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Yevgeny Petrilin <yevgenyp@...lanox.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH net-next] net/mlx4_core: Handle null return by
 pci_match_id()

On Mon, Mar 31, 2014 at 07:52:20AM +0300, Or Gerlitz wrote:
>On Mon, Mar 31, 2014 at 6:54 AM, Wei Yang <weiyang@...ux.vnet.ibm.com> wrote:
>>
>> On Sun, Mar 30, 2014 at 09:08:06PM +0300, Or Gerlitz wrote:
>> >On Sun, Mar 30, 2014 at 6:26 PM, Amir Vadai <amirv@...lanox.com> wrote:
>> >> Fix issue introduced by commit: 97a5221 "net/mlx4_core: pass
>> >> pci_device_id.driver_data to __mlx4_init_one during reset".
>> >>
>> >> pci_match_id() might return NULL if someone binds the driver to a device
>> >> manually using /sys/bus/pci/drivers/.../new_id. Need to check 'id'
>> >> before using it.
>> >>
>> >> Thanks to Bjorn who raised the problem.
>> >
>> >Well, that commit was applied to net and is now present in Linus
>> >tree... so assuming it's too late for 3.14, need to queue this for
>> >-stable
>> >
>> >Or.
>>
>> Sorry for this bothering, hope this will not block someone.
>>
>> Here is my suggestion for fixing this, not sure this is a good way to export
>> pci_match_device() to modules. This is my current solution to this problem. If
>> you have any comments, please let me know.
>>
>> ------------------------------------------------------------------------------
>> From 9361e1edd6776202c6e11dd44d3d4d72c990b111 Mon Sep 17 00:00:00 2001
>> From: Wei Yang <weiyang@...ux.vnet.ibm.com>
>> Date: Mon, 31 Mar 2014 11:34:57 +0800
>> Subject: [PATCH net-next] net/mlx4_core: match pci_device_id including dynids
>
>
>
>Your original commit went to net and same needs to be done for the fix
>

Thanks, seems I still misunderstand this rule.
I thought Amir is correct, so copyed his.

Will pay attention next time.

-- 
Richard Yang
Help you, Help me

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