Re: hisax isdn card (Sedlbauer Speed Fax+) does not get an interrupt

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Thomas Voegtle wrote:
Thx for your answer. Unfortunately, it didn't help us yet in finding a fix for the problem.

The first IRQs are received after the call to pci_enable_device, but before the IRQ handler itself is registered (register_irq). The IRQs seem to be triggered by the write operations to the card registers (byteout()/outb() calls around lines 676ff in sedlbauer.c); the IRQ handler is registered much later, though. The dump above suggests that the kernel relays the interrupts to the USB handler (on the same IRQ) instead - which obviously is wrong.

In short:
* pci_enable_device
* writing to card registers -> triggering interrupts
  (handler not yet installed -> error)
* register interrupt -> fails, as it already was disabled due to the errors

Again: thx for your comments. Do you have any further ideas/advice on how to get the driver running?

Presumably whatever writes the driver is doing there are enabling the card to generate interrupts - in this case the IRQ handler needs to be registered before this point, and not after..

--
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from [email protected]
Home Page: http://www.roberthancock.com/

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