tree fdff3425a817514e44d5e39dee1171b1baabc9d0
parent 5a6ff5ba5cea8804ac20bf0f3514cf946575e931
author Alex Williamson <alex.williamson@redhat.com> 1321476405 -0700
committer Andreas Färber <afaerber@suse.de> 1349800849 +0200

pci-assign: Harden I/O port test

Markus Armbruster points out that we're missing a < 0 check
from pread while trying to probe for pci-sysfs io-port
resource support.  We don't expect a short read, but we
should harden the test to abort if we get one so we're not
potentially looking at a stale errno.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
(cherry picked from commit 1d1c8a498b7ce5c5636f1014f7ad18aa4e1acc0a)

Signed-off-by: Andreas Färber <afaerber@suse.de>