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Date: Tue, 12 Oct 2010 07:59:44 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
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Subject: Re: [Xenomai-help] Xenomai and PEAK can bus card problem
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To: Peter Pastor <peter.pastor@domain.hid>
Cc: xenomai@xenomai.org

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Am 12.10.2010 03:55, Peter Pastor wrote:
> Hey Wolfgang,
>=20
> I made some great progress in the last few hours. I figured that the PE=
AK
> PCI can bus card had IRQ 11 according to "lspci" and after the kernel
> modules are loaded it switched to IRQ 16 which caused all the trouble s=
ince
> the USB and the SCSI controller have the same IRQ.
>=20
> Now, I just went ahead and hard coded
>=20
> /usr/src/xenomai/ksrc/drivers/can/sja1000/rtcan_sja1000.c
> FUNCTION rtcan_sja1000_register...
> #############
>=20
>     chip->bus_err_on =3D 1;
>=20
>     printk("PETER chip->irq_num =3D %i\n", chip->irq_num);
>     chip->irq_num =3D 11;
>     printk("PETER chip->irq_num =3D %i\n", chip->irq_num);
>=20
>     ret =3D rtdm_irq_request(&dev->irq_handle,
>                chip->irq_num, rtcan_sja_interrupt,
>                chip->irq_flags, sja_ctrl_name, dev);

You can't change reality (physical wiring) this way.

If you do not need the USB interface, unbind the driver so that the
Linux IRQ usage ends:

echo 0000:00:1a.0 > /sys/bus/pci/drivers/ehci_hcd/unbind
     ^^^^^^^^^^^^
(fill in the according PCI ID)

Jan


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