From: Michael S. Tsirkin <mst@redhat.com>
Date: Mon, 12 Jan 2015 14:23:37 +0000 (+0200)
Subject: virtio/balloon: verify device has config space
X-Git-Tag: fixes-v4.0-rc1~61^2~73
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d9becc1e0c6f86e222e1955e39302d304ad274b;p=pandora-kernel.git

virtio/balloon: verify device has config space

Some devices might not implement config space access
(e.g. remoteproc used not to - before 3.9).
virtio/balloon needs config space access so make it
fail gracefully if not there.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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