Messages in this thread | | | From | "Altobelli, David" <> | Date | Tue, 11 Nov 2008 16:24:58 +0000 | Subject | RE: sharing interrupt between PCI device |
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>> On Mon, Nov 10, 2008 at 4:01 PM, Nobin Mathew <nobin.mathew@gmail.com> wrote: >> > Yes USB Virtual Controller has input devices like keyboard and mouse >> > (routed through hpilo card (remote console)), so those things stops >> > working when we remove hpilo driver. >> >
That is not quite correct. Nothing is routed through hpilo.
The problem is that there is a shared hardware resource in iLO function 2 (hpilo), and it is used by iLO function 4 (uhci_hcd kdb/mouse). When hpilo is unloaded, the pci_device_disable() call removes the ability for this function to act as a busmaster, which stops the uhci_hcd from functioning correctly.
Reloading hpilo will enable the remote console again.
Removing the pci_disable_device() "fixes" the problem, but doing that worries me.
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