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Date: Sun, 11 Feb 2007 20:28:31 +0200
From: Maksym Veremeyenko <verem@domain.hid>
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Subject: Re: [Xenomai-help] Strange deadlock.
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To: Jan Kiszka <jan.kiszka@domain.hid>
Cc: Xenomai-help@domain.hid

Jan Kiszka =D0=C9=DB=C5=D4:

> You are holding the mutex across the serial transaction, i.e. a
> secondary mode switch, right? If you haven't set
> CONFIG_XENO_OPT_RPIDISABLE, you might be are affected by the bug in the
> priority coupling between Xenomai and the Linux kernel. Already tried
> latest v2.3.x SVN?
i tried with r2170 and rewrited code for RT serial - situation the same.

Solution for me is to change tasks priority - set lower priority to task=20
that perform read/write serial driver operations under lock.

Perhaps i should rewrite code to exclude I/O operations under locked=20
mutex at all.


--=20
________________________________________
Maksym Veremeyenko