virtio_console: Free buffers from out-queue upon close

Free pending output buffers from the virtio out-queue when
host has acknowledged port_close.

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (rebased & cut down)

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index eecb1f9e2e6b..db244b5b6c8a 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1439,6 +1439,10 @@ static void remove_port_data(struct port *port)
         /* Remove buffers we queued up for the Host to send us data in. */
         while ((buf = virtqueue_detach_unused_buf(port->in_vq)))
                 free_buf(buf);
+
+        /* Free pending buffers from the out-queue. */
+        while ((buf = virtqueue_detach_unused_buf(port->out_vq)))
+                free_buf(buf);
 }
 
 /*