s390: remove dead code from signal handler
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Fri, 4 May 2012 07:46:04 +0000 (09:46 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 16 May 2012 12:42:40 +0000 (14:42 +0200)
commitc15787a7c3f702c4240708fb8e63abce1bfe1136
tree55d861db36b6b4b185bfb950e96e3132ed1b7d12
parenta686425b31bb6441f6e20d698bf31dc65043f61f
s390: remove dead code from signal handler

The code in entry[64].S calls do_signal only on return to user space.
user_mode(regs) is true for every calls to do_signal, it is unnecessary
to recheck user_mode at the start of do_signal and the legacy signal
stack switching path in get_sigframe is never reached.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/kernel/compat_signal.c
arch/s390/kernel/signal.c