From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Thu, 05 May 2011 18:20:59 +0600
From: Alexey Galakhov <agalakhov@domain.hid>
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Subject: [Adeos-main] mini2440: ipipe kernel stuck in idle loop after
	xenomai init
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To: adeos-main@gna.org

Hi,

I'm still trying to debug ipipe on the mini2440 board (linux 2.6.35.9 +
ipipe 1.18.01 + Gilles' ARM patches). Now I encounter the following
problem. If any Xenomai skin module is loaded the system hangs. In fact,
it goes into sleep with interrupts off.

The sleep was in pm_idle() and it is done correctly. The problem lies
somewhere else. I tried to use busy-loop instead of sleep, like that:

- if (hlt_counter) {
+ if (1 || hlt_counter) {

in cpu_idle() (arch/arm/kernel/process.c). Now I found that the loop
"while (!need_resched())" never exits, need_resched() is always
returning false and there are no interrupts. Looks like the timer
interrupt either stops ticking or is masked out since xenomai skin is
loaded.

Can you please help to debug it?

--
Alex