tree dedeb89f5905567acdd66ffde0928af4c9bada26
parent 1f169f66ddcc3b4614f840bef367de1ca20e16fe
author Daniel De Graaf <dgdegra@tycho.nsa.gov> 1298466695 -0500
committer Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> 1298473834 -0500

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>