At present rtas_call() can be called before the kmalloc subsystem is
initialized, and if RTAS reports a hardware error, the code tries to do a
kmalloc to make a copy of the error report.  This patch changes it so that
we don't do the kmalloc in that situation.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>