virtio/console: verify device has config space
authorMichael S. Tsirkin <mst@redhat.com>
Tue, 13 Jan 2015 14:43:18 +0000 (16:43 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 3 Feb 2015 23:48:51 +0000 (15:48 -0800)
commitd909f4315b99e5743041eeb01a2552fcbb125c89
tree25846edf9ed069076477be6049a341f02da1fd2b
parent63e144c9d6ffa791c1402f4ee4551c1b9f5a336a
virtio/console: verify device has config space

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

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/char/virtio_console.c