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virtio: console: Resize console port 0 on config intr only if multiport is off 

When using multiport, we'll use control messages. Ensure we don't
accidentally update port 0 size on config interrupts.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
CC: Christian Borntraeger <borntraeger@de.ibm.com>
CC: linuxppc-dev@ozlabs.org
CC: Kusanagi Kouichi <slash@ac.auone-net.jp>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Amit Shah 2010-05-06 02:05:07 +05:30 committed by Rusty Russell
parent cdfadfc1ad
commit 4038f5b767
1 changed files with 10 additions and 7 deletions
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17
drivers/char/virtio_console.c
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@ -1319,13 +1319,16 @@ static void config_intr(struct virtio_device *vdev)
portdev = vdev->priv; portdev = vdev->priv;
/* if (!use_multiport(portdev)) {
* We'll use this way of resizing only for legacy support. /*
* For newer userspace (VIRTIO_CONSOLE_F_MULTPORT+), use * We'll use this way of resizing only for legacy
* control messages to indicate console size changes so that * support. For newer userspace
* it can be done per-port * (VIRTIO_CONSOLE_F_MULTPORT+), use control messages
*/ * to indicate console size changes so that it can be
resize_console(find_port_by_id(portdev, 0)); * done per-port.
*/
resize_console(find_port_by_id(portdev, 0));
}
} }
static int init_vqs(struct ports_device *portdev) static int init_vqs(struct ports_device *portdev)