wait_for_completion_interruptible() changes

[Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>]

	Hi Andi, Ingo,

Recently the return value of wait_for_completion_interruptible() in case of
succesful completion has changed:
  - in 2.6.23, it returns 0 on completion,
  - in current linux-2.6.git, it returns -1 on completion.

I.e. this breaks all code that checks for a non-zero return value instead
of explicitly comparing with -ERESTARTSYS.

I suspect this is caused by the recent completion refactoring?

With kind regards,
 
Geert Uytterhoeven
Software Architect

Sony Network and Software Technology Center Europe
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