From 4f57ba716b12ab939d46b7910768c3da3623fdc1 Mon Sep 17 00:00:00 2001
From: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
Date: Tue, 15 Oct 2013 11:24:07 +0200
Subject: [PATCH] s390/crypto: fix aes_s390 crypto module unload problem

If a machine has no hardware support for the xts-aes or ctr-aes algorithms
they are not registered in aes_s390_init. But aes_s390_fini unconditionally
unregisters the algorithms which causes crypto_remove_alg to crash.
Add two flag variables to remember if xts-aes and ctr-aes have been added.

Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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