[linux-dvb] Re: saa7146_init_one(): request_irq() failed messagewith kernel 2.6.8.1

[Michael Hunold <hunold-ml@web.de>]

Hello,

On 21.09.2004 15:17, Reiner Buehl wrote:
> > Something has grabbed the irq and doesn't allow irq sharing.
> >
> > What does "cat /proc/interrupts" say?
> >
> > What are your bios settings regarding the interrupt setup?
> The bios is set to the following:
> PNP OS Installed = No
> Resources Controlled By = Auto (ESCD)
>
> cat /proc/interupts shows:
>            CPU0       
>   0:     342000          XT-PIC  timer
>   1:          8          XT-PIC  i8042
>   2:          0          XT-PIC  cascade
>   3:          2          XT-PIC  lirc_serial
>   5:          0          XT-PIC  uhci_hcd
>   7:          0          XT-PIC  parport0
>   8:          3          XT-PIC  rtc
>   9:          0          XT-PIC  acpi
>  12:     206305          XT-PIC  eth0, ehci_hcd, uhci_hcd
>  14:         13          XT-PIC  ide0
> NMI:          0 
> LOC:          0 
> ERR:          0
> MIS:          0
> Unfortunatly I do need the parallel port for graphlcd. Is there a way to
> influence the bios to assign a different irq? Should I set "PnP OS
> Installed" to "Yes"?
I'm not an expert on that field, but it's definately worth a try. Most 
of the more recent systems I know put the on-board stuff on dedicated 
irqs and let the pci devices share the other interrupts. For example, my 
network controller and the dvb card share the same irq.

Alternatively, you can perhaps run your parallel port with an irq in 
polling mode.

> Best regards,
> Reiner.
CU
Michael.