Messages in this thread | | | Subject | Re: Help enabling PCI interrupts on Dell/SMP and Sun/SMP systems. | From | Roland Dreier <> | Date | Wed, 23 Feb 2005 15:46:54 -0800 |
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Alan> I ask the card which interrupt line it was given at Alan> boot-time:
Alan> pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &softp->interrupt_line);
Alan> Then I request an IRQ:
Alan> request_irq(softp->interrupt_line, sseintr, SA_INTERRUPT, "sse", softp);
Don't do that. The kernel may need you to use a different interrupt number than you read from the PCI config header. Use dev->irq, as in
request_irq(dev->irq, sseintr, SA_SHIRQ | SA_INTERRUPT, "sse", softp);
Also, make sure that you do pci_enable_device(dev) before you look at dev->irq, since the field will not be initialized until you do that.
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