From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Date: Thu, 12 Dec 2013 16:53:59 +0000 (+0100)
Subject: s390/pci/dma: fix accounting of allocated_pages
X-Git-Tag: v3.14-rc1~184^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f7038b7c3f4924b18390c51c1ec1e49287cc87db;p=pandora-kernel.git

s390/pci/dma: fix accounting of allocated_pages

allocated_pages sometimes are increased even if s390_dma_alloc fails
also this value is never decreased even if s390_dma_free is called.
This patch fixes these bugs.
Also remove the atomic64_t casts (the members are already of this type).

Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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