Re: de2104x: interrupts before interrupt handler is registered

["linux-os \(Dick Johnson\)" <linux-os@analogic.com>]

On Mon, 6 Mar 2006, Robert Hancock wrote:

> linux-os (Dick Johnson) wrote:
>> This started to happen in a lot of PCI drivers once it became
>> necessary to call pci_enable_device() in order to make the
>> returned IRQ values valid. This has been reported numerious
>> times and has not been fixed. Basically, in order to get
>> the correct value, one needs to disable the board in some
>> unspecified way so it is not possible for it to generate
>> an interrupt before enabling the board. With some devices
>> this may not be possible!
>
> What kind of board behaves that way? pci_enable_device just enables the
> device BARs and wakes it up if it was suspended, I should think that any
> device that starts generating interrupts from that must be quite broken..
>
> --
> Robert Hancock      Saskatoon, SK, Canada
> To email, remove "nospam" from hancockr@nospamshaw.ca
> Home Page: http://www.roberthancock.com/

No. It would be good if that was true. Unfortunately, the IRQ
returned before the pci_enable_device() is not correct. It
gets re-written by pci_enable_device().


Cheers,
Dick Johnson
Penguin : Linux version 2.6.15.4 on an i686 machine (5589.50 BogoMips).
Warning : 98.36% of all statistics are fiction, book release in April.
_


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