Re: 2.6.6-rc3: modular DVB tda1004x broken

[David Mosberger]

>>>>> On Sat, 1 May 2004 17:51:34 -0700, Andrew Morton <akpm@xxxxxxxx> said:

  Andrew> It wasn't quite that simple - lots of architectures have
  Andrew> been inventive.

  Andrew> For 2.6.6 we should just stick that errno decl back in
  Andrew> there..

Why not just disallow user-level use of the _syscall() macros.
syscall() is a much more portable and easier to implement alternative
which has been around "forever" (even SunOS supported it, IIRC).  I
suppose there is a slight performance loss (function-call vs.  inline)
but we're talking about system calls here...

Also, the _syscall() macros have never been supported at the
user-level on ia64 linux and most packages already know to use
syscall().  Unfortunately, some "clever" maintainers use syscall()
only inside #ifdef __ia64, but that would be easy to fix if _syscall()
gets discouraged on all linux platforms.

	--david
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