From: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Date: Wed, 23 Feb 2011 13:11:35 +0000 (-0500)
Subject: xen-gntdev: Fix incorrect use of zero handle
X-Git-Tag: v2.6.39-rc1~439^3~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=77c35acb7c81cd94c6b30a3bef488dd2d8145131;p=pandora-kernel.git

xen-gntdev: Fix incorrect use of zero handle

The handle with numeric value 0 is a valid map handle, so it cannot
be used to indicate that a page has not been mapped. Use -1 instead.

Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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