Re: lock transaction does not work

[Andreas B. <and...@mu...>]

On Tue, Apr 18, 2000 at 10:58:43PM +0200, Manfred Weihs wrote:
> Today I tried the bugfix of the lock transaction (ie. the cvs-version
> from the last weekend) and hoped that it worked now. But I am sorry to
> tell you that it still does not work. I tried a compare_swap-operaton
> using a code like this:
> 
> int errorcode=raw1394_lock(rawhandle, 0xffc0 | NodeID,
> 0xfffff0000904ull,
>                            2, new_oPCR0, old_oPCR0, &test_oPCR0);
> 
> (where *_PCR0 are of the type quadlet_t).
> 
> But this does return errorcode=-1004. Does anybody know, what this
> errorcode means?

It means invalid arg.  My fault, I had some arg checking logic in the
kernel the wrong way round.  Updating the subsystem to CVS should
hopefully cure that problem.

Maybe I should test it myself some time :-)

As for the error codes: you can look them up in raw1394.h (kernel
subsystem) or src/kernel-raw1394.h (libraw1394), both files are
identical.  Error reporting needs to be fixed (or more precisely needs
a policy on what errors to return when).

-- 
 Andreas E. Bombe <and...@mu...>    DSA key 0x04880A44
http://home.pages.de/~andreas.bombe/    http://linux1394.sourceforge.net/