Re: [rtl] Odd Problem with 3.0 and FIFOs

[Michael Barabanov <baraban@fsmlabs.com>]

Could you please try 2.4.0-test1?

Michael.

Stephen D. Cohen (scohen@xybion.com) wrote:
> Gang,
> 
> 	I recently installed RTLinux 3.0pre6 on my laptop and am having a
> most odd problem with the real time fifos.  Here then is a chronology of my
> problem(s).
> 
> 1) Installed 2.4.0-test2 version of Linux without the RTLinux extensions and
> got everything working as expected.
> 2) Patched the kernel sources with the RTLinux 3.0pre6 patches.  Ignored a
> couple of errors (I deleted the arm and alpha trees due to space
> limitations).
> 3) Compiled RTLinux patched kernel and all seems well.  I can now install
> the RTLinux modules and simple RT programs run just fine.
> 
> 	At this point I am trying to run some of the examples from the
> examples directory.  In particular, I am trying the "frank" example and
> having no luck.  It ran just fine under 2.2 on another machine here (I just
> checked it), but will not run here.  The error messages produced are:
> 
> Can't send a command to RT Task
> rtf: release on a not opened descriptor inode=0
> rtf: release on a not opened descriptor inode=0
> rtf: release on a not opened descriptor inode=1
> 
> 	This is produced at the first non-realtime attempt to write to a
> fifo.  I had a browse through the RTLinux sources for the rtf: release
> message and ended up in macro heck.  If anyone can shed any light on my
> problem, I would certainly appreciate the assistance.
> 
> Regards,
> 
> Steve
> 
> ------------------------------------------
> Stephen D. Cohen, Engineering Manager
> Xybion Positioning Systems
> 11528 53rd Street North
> Clearwater, FLA  33760
> phone: (727) 299-0150, fax: (727) 299-0804
> ------------------------------------------
> 
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