2 files changed, 8 insertions, 0 deletions

diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 8c24b86aadc9..f63bf77a4825 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1210,6 +1210,8 @@ free_cdev:
 free_port:
         kfree(port);
 fail:
+        /* The host might want to notify management sw about port add failure */
+        send_control_msg(port, VIRTIO_CONSOLE_PORT_READY, 0);
         return err;
 }
 
@@ -1488,6 +1490,9 @@ free_chrdev:
 free:
         kfree(portdev);
 fail:
+        /* The host might want to notify mgmt sw about device add failure */
+        __send_control_msg(portdev, VIRTIO_CONSOLE_BAD_ID,
+                           VIRTIO_CONSOLE_DEVICE_READY, 0);
         return err;
 }
 
diff --git a/include/linux/virtio_console.h b/include/linux/virtio_console.h
index ae4f039515b4..015736113c25 100644
--- a/include/linux/virtio_console.h
+++ b/include/linux/virtio_console.h
@@ -14,6 +14,8 @@
 #define VIRTIO_CONSOLE_F_SIZE   0       /* Does host provide console size? */
 #define VIRTIO_CONSOLE_F_MULTIPORT 1    /* Does host provide multiple ports? */
 
+#define VIRTIO_CONSOLE_BAD_ID           (~(u32)0)
+
 struct virtio_console_config {
         /* colums of the screens */
         __u16 cols;
@@ -42,6 +44,7 @@ struct virtio_console_control {
 #define VIRTIO_CONSOLE_PORT_OPEN        3
 #define VIRTIO_CONSOLE_PORT_NAME        4
 #define VIRTIO_CONSOLE_PORT_REMOVE      5
+#define VIRTIO_CONSOLE_DEVICE_READY     6
 
 #ifdef __KERNEL__
 int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int));