netdev - Re: Oops when insmod rtl8192ce

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Message-ID: <20110727135353.GA16431@tuxdriver.com>
Date:	Wed, 27 Jul 2011 09:53:53 -0400
From:	"John W. Linville" <linville@...driver.com>
To:	hubert Liao <liao.hubertt@...il.com>
Cc:	wlanfae@...ltek.com, Larry Finger <Larry.Finger@...inger.net>,
	Chaoming Li <chaoming_li@...lsil.com.cn>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: Oops when insmod rtl8192ce

On Wed, Jul 27, 2011 at 05:20:15PM +0800, hubert Liao wrote:
> Hi,
> 
> We got an oops when insmod rtl8192ce module (the board is an ARM soc),
> accroding the oops message, find it's because in rtl_pci_probe() called
> _rtl_pci_find_adapter(),
> in this funcation, the  pdev->bus->self is a NULL pointer .
> 
> static boot _rtl_pci_find_adapter(strcut pci_dev *dev,
>               struct ieee80211_hw *hw)
> {
> 
> struct pci_dev *bridge_pdev = pdev->bus->self;   //line 1601
> ...
> 
> pcipriv->ndis_adapter.pcibridge_vendorid = bridge_pdev->vendor; <-- [oops
> here] line 1700
> 
> ...
> }
> 
> here, I just want to know why the bus->self  is NULL?

pdev is coming straight from what is passed to the PCI probe routine.
It seems like pdev->bus->self should already be set before that
happens.

Please open a bug at bugzilla.kernel.org to help us keep track of
this -- thanks!

John
-- 
John W. Linville		Someday the world will need a hero, and you
linville@...driver.com			might be all we have.  Be ready.
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