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path: root/drivers/char/virtio_console.c
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Diffstat (limited to 'drivers/char/virtio_console.c')
-rw-r--r--drivers/char/virtio_console.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 8c99bf1b5e9..942a9826bd2 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -529,6 +529,10 @@ static bool will_write_block(struct port *port)
{
bool ret;
+ if (!port->guest_connected) {
+ /* Port got hot-unplugged. Let's exit. */
+ return false;
+ }
if (!port->host_connected)
return true;
@@ -1099,6 +1103,13 @@ static int remove_port(struct port *port)
{
struct port_buffer *buf;
+ if (port->guest_connected) {
+ port->guest_connected = false;
+ port->host_connected = false;
+ wake_up_interruptible(&port->waitqueue);
+ send_control_msg(port, VIRTIO_CONSOLE_PORT_OPEN, 0);
+ }
+
spin_lock_irq(&port->portdev->ports_lock);
list_del(&port->list);
spin_unlock_irq(&port->portdev->ports_lock);
@@ -1120,9 +1131,6 @@ static int remove_port(struct port *port)
hvc_remove(port->cons.hvc);
#endif
}
- if (port->guest_connected)
- send_control_msg(port, VIRTIO_CONSOLE_PORT_OPEN, 0);
-
sysfs_remove_group(&port->dev->kobj, &port_attribute_group);
device_destroy(pdrvdata.class, port->dev->devt);
cdev_del(&port->cdev);