From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: George Pontis <gpontis@z9.com>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai] cannot open switchtest device ?
Date: Thu, 25 Jul 2013 21:56:20 +0200 [thread overview]
Message-ID: <51F182E4.70907@xenomai.org> (raw)
In-Reply-To: <04a701ce864f$91047590$b30d60b0$@z9.com>
On 07/21/2013 10:19 PM, George Pontis wrote:
> I find a problem trying to run xeno-test when it goes to open the switchtest
> device. Before this post I searched the web and found a thread started by
> "raespi".
> We have a similar situation in which we are both using buildroot, but I'm
> not sure that the underlying cause is the same. I am building a kernel for
> 3.8.13 using
> the patches from git, and also the current git xenomai. ( Current as of a
> month ago ). The target is an custom board based on the iMX53.
>
> To narrow the source of the problem, I modified switchtest.c to report on
> any case where the open() returns a negative number. I also made a temporary
> patch
> to not prepend the name with "/dev/". I might add that I'm using a new RTDM
> driver named fpga_rtdm that can be opened and access successfully.
> Here's what happens:
This may look like a stupid suggestion, but that is the only explanation
I see: you are probably using glibc's open instead of xenomai's open.
This may happen for instance if you are compiling xenomai libraries
statically and switchtest Makefile does not use the "wrap-link.sh" script.
--
Gilles.
next prev parent reply other threads:[~2013-07-25 19:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-21 20:19 [Xenomai] cannot open switchtest device ? George Pontis
2013-07-25 19:56 ` Gilles Chanteperdrix [this message]
2013-07-26 16:14 ` George Pontis
2013-07-26 18:57 ` Gilles Chanteperdrix
2013-07-28 22:03 ` Gilles Chanteperdrix
2013-07-29 1:59 ` George Pontis
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