char: make chr_fe_deinit() optionaly delete backend

This simplifies removing a backend for a frontend user (no need to
retrieve the associated driver and separate delete call etc).

NB: many frontends have questionable handling of ending a chardev. They
should probably delete the backend to prevent broken reusage.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/chardev/char-fe.c b/chardev/char-fe.c
index 341221d029..3f90f0567c 100644
--- a/chardev/char-fe.c
+++ b/chardev/char-fe.c
@@ -211,7 +211,7 @@ unavailable:
     return false;
 }
 
-void qemu_chr_fe_deinit(CharBackend *b)
+void qemu_chr_fe_deinit(CharBackend *b, bool del)
 {
     assert(b);
 
@@ -224,6 +224,9 @@ void qemu_chr_fe_deinit(CharBackend *b)
             MuxChardev *d = MUX_CHARDEV(b->chr);
             d->backends[b->tag] = NULL;
         }
+        if (del) {
+            object_unparent(OBJECT(b->chr));
+        }
         b->chr = NULL;
     }
 }