From: Bodo Stroesser <bstroesser@fujitsu-siemens.com>

Change the do_signal interface to eliminate its argument.  Also, remove the
calls from the system call handlers since they are redundant.  In all cases,
pending signals are checked for in the interrupt handler.

Temporarily, do_signal passes the current error to kern_do_signal.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>