From 9499934f70deac0cdb96aa2d90f2a0a2de69d80c Mon Sep 17 00:00:00 2001
From: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Date: Mon, 24 Feb 2014 14:30:00 +0100
Subject: [PATCH] s390/sclp_early: Return correct HSA block count also for zero

Currently we return a negative block count if SCLP returns HSA block
count zero. The reason is that we subtract one for the header page.

So fix this and correctly return zero block count if SCLP returns zero.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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