PCMCIA IRQ problems on 2.4.34

Peter Stuge stuge-linux-pcmcia at cdy.org
Tue Apr 10 01:14:02 EDT 2007

On Mon, Apr 09, 2007 at 09:20:41PM -0400, Marc wrote:
> but I'm having problems getting an IRQ assigned to it.  Does anyone
> know the magic kernel options, boot options

> Linux Kernel Card Services 3.1.22
>   options:  [pci] [cardbus] [pm]
> PCI: No IRQ known for interrupt pin A of device 00:02.0.
> PCI: No IRQ known for interrupt pin B of device 00:02.1.

This is bad.

> Yenta ISA IRQ mask 0x06b8, PCI irq 0

irq 0, it can not work.

> cs: cb_alloc(bus 4): vendor 0x168c, device 0x0013
> PCI: Enabling device 04:00.0 (0000 -> 0002)
> PCI: No IRQ known for interrupt pin A of device 04:00.0.

Again, bad.

Check /usr/src/linux/Documentation/kernel-parameters.txt and look for
anything named irq. Here are some suggestions:


Check for success by reviewing dmesg and confirming that devices do
get valid IRQs assigned. You can also confirm this with:

cat /proc/interrupts

There you'll also see if interrupts actually arrive as they should.


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