Re: [Xenomai-help] IXXAT-PCI-CAN driver hijacks my pci board

[Stefan Kisdaroczi <kisda@domain.hid>]

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Hi Wolfgang,

Wolfgang Grandegger schrieb:
> [...]
>>> dmesg output, there is no IXXAT-PCI-CAN board installed:
>>>> RT-Socket-CAN 0.90.2 - (C) 2006 RT-Socket-CAN Development Team
>>>> RTCAN SJA1000 driver initialized
>>>> PCI: setting IRQ 12 as level-triggered
>>>> IXXAT-PCI-CAN 0000:00:11.0: found PCI INT A -> IRQ 12
>>>> IXXAT-PCI-CAN: Initializing device 10b5:9050:2503
> 
> OK, it finding a variant of the PLX9050, but it will not use the device  
> because of the following lines after the above printout:
> 
>     if (sub_sys_id != IXXAT_PCI_SUB_SYS_ID)
>              return -ENODEV;
>                 
> But ...
> 
>>> The following patch fixed it for me (my own driver loads again).
> 
> ... obviously it does  not probe again.

it probes again, but pci_request_regions() failed in my driver.

In the -ENODEV case, the function pci_release_regions() is not
called in the ixxat driver, so access is blocked for other drivers.

Stefan




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