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Date: Tue, 10 Aug 2010 22:47:21 +0200 From: Joerg Roedel <joro@...tes.org> To: Sander Eikelenboom <linux@...elenboom.it> Cc: linux-kernel@...r.kernel.org Subject: Re: [2.6.35] AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40 BUG: unable to handle kernel NULL pointer dereference at 0000000000000198 Hi Sander, On Tue, Aug 10, 2010 at 10:36:35PM +0200, Sander Eikelenboom wrote: > Errr which seperate usb controller ? .. it has actually: > - 1 pci-e usb 2.0 controller > - 2 pci-e usb 3.0 controller (one of which includes a sata controller as well) The devices should be attached to this controler: 0a:01.0 USB Controller [0c03]: NEC Corporation USB [1033:0035] (rev 43) (prog-if 10 [OHCI]) 0a:01.1 USB Controller [0c03]: NEC Corporation USB [1033:0035] (rev 43) (prog-if 10 [OHCI]) 0a:01.2 USB Controller [0c03]: NEC Corporation USB 2.0 [1033:00e0] (rev 04) (prog-if 20 [EHCI]) The PCI devices associated with that controler alias to 0a:00.0 which does not exist in your system (hence the crash). And the fact that these devices have an alias makes me believe that the BIOS detects them as legacy PCI devices. PCI-e does typically not has aliases. Can you send lcpi -t output to see to which upstream bridge these devices are connected to? Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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