On Mon, 2006-09-11 at 20:13 +0200, Wolfgang Grandegger wrote:
> Matthias Fuchs wrote:
> > On Monday 11 September 2006 17:46, Wolfgang Grandegger wrote:
> >>> A possible explanation is that configurations only using the timer IRQ
> >>> are not affected, since the decrementer is not subject to this issue
> >>> (the tick handler returns XN_ISR_NOENABLE anyway).
> >> I run RT-Socket-CAN on a CAN PCI Card on my MPC5200 without any 
> >> problems, so far (under Linux 2.4). Here the end function of the PIC:
> >>
> >>    static void
> >>    mpc5xxx_ic_end(unsigned int irq)
> >>    {
> >>          if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
> >>                  mpc5xxx_ic_enable(irq);
> >>    }
> >>
> >> Matthias, have you printed out the value of status? I'm just curious.
> >>
> >> Wolfgang.
> > 
> > Here it comes:
> > bash-3.00# ./bin/rtcansend rtcan0 -i 0 1 2 3 4
> > _end: status=00000042
> > bash-3.00# ./bin/rtcansend rtcan0 -i 0 1 2 3 4
> > _end: status=00000042
> > bash-3.00# ./bin/rtcansend rtcan0 -i 0 1 2 3 4
> > _end: status=00000042
> > 
> > So it's IRQ_DISABLED (=2).
> 
> In 2.6 the interrupts are disabled by default. Then the attached patch 
> for Xenomai should help.


Applied, thanks.

-- 
Philippe.



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