Messages in this thread | | | Date | Wed, 27 Jul 2011 09:37:13 -0500 | From | Larry Finger <> | Subject | Re: Oops when insmod rtl8192ce |
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On 07/27/2011 04:26 AM, 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? > ---- > [ 148.186632] Unable to handle kernel NULL pointer dereference at > virtual address 00000020
As John Linville suggested, please open a bugzilla report.
I would also like some additional information. What kernel are you using? In addition, please post the 'lspci -nnk' information for your card.
I also think that pdev->bus should have been setup before the initialization code in rtl8192ce was called. I have not tested the driver on other than x86 and x86_64 architectures because of hardware availability, thus ARM may expose some problems. Is this soc little-endian?
Thanks, Larry
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