From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Thu, 29 Oct 2009 14:04:13 +0000 (+0100)
Subject: [S390] smp: fix sigp stop handling
X-Git-Tag: v2.6.32-rc6~25^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f8501ba77d69c88a65e4ebbe03bdc65b1edb0b86;p=pandora-kernel.git

[S390] smp: fix sigp stop handling

According to the architecture a cpu must not necessarily enter stopped
state after completion of a sigp instruction with "stop" order code.
So remove the BUG() statement after self sending sigp stop to avoid
that it ever gets reached.
Also add a sigp busy check to make sure that the order gets delivered.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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