virtio: console: Send SIGIO in case of port unplug

If a port has registered for SIGIO signals, let the application know that the port is getting unplugged. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
git-mirror · Oct 21, 2010 · a461e11 · a461e11
1 parent 55f6bcc
commit a461e11
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
@@ -1259,6 +1259,9 @@ static void unplug_port(struct port *port)
 		port->guest_connected = false;
 		port->host_connected = false;
 		wake_up_interruptible(&port->waitqueue);
+
+		/* Let the app know the port is going down. */
+		send_sigio_to_port(port);
 	}
 
 	if (is_console_port(port)) {