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

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Message-ID: <20140401014110.GA5883@richard>
Date:	Tue, 1 Apr 2014 09:41:10 +0800
From:	Wei Yang <weiyang@...ux.vnet.ibm.com>
To:	David Miller <davem@...emloft.net>
Cc:	weiyang@...ux.vnet.ibm.com, or.gerlitz@...il.com,
	amirv@...lanox.com, netdev@...r.kernel.org, yevgenyp@...lanox.com,
	bhelgaas@...gle.com
Subject: Re: [PATCH net-next] net/mlx4_core: Handle null return by
 pci_match_id()

On Mon, Mar 31, 2014 at 04:32:40PM -0400, David Miller wrote:
>From: Wei Yang <weiyang@...ux.vnet.ibm.com>
>Date: Mon, 31 Mar 2014 11:54:39 +0800
>
>> 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.
>
>This needs to be ACK'd by the PCI maintainers, please make sure they see this.

Yes, I think Bjorn, maintainers of PCI, is in the list.

Bjorn,

Do you have some concern on this implementation?
Or, you suggest me to send this to pci maillist too?

-- 
Richard Yang
Help you, Help me

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