[Qemu-devel] [PATCH 1/2] char: update read handler in all cases

["Marc-André Lureau" <marcandre.lureau@redhat.com>]

In commit ac1b84dd1 (rhbz#1027181), a check was added to only update the
"read handler" when the front-end is opened, because the read callbacks
were not restored when a device is plugged. However, this seems not
correct, the handler is correctly set back on hotplug (in
virtconsole_realize) and the bug can no longer be reproduced.

Calling chr_update_read_handler() allows to fix the mux driver to stop
calling the child handlers (which may be going to be destroyed).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 qemu-char.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/qemu-char.c b/qemu-char.c
index fb456ce..f7a07e6 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -468,7 +468,7 @@ void qemu_chr_add_handlers_full(CharDriverState *s,
     s->chr_read = fd_read;
     s->chr_event = fd_event;
     s->handler_opaque = opaque;
-    if (fe_open && s->chr_update_read_handler) {
+    if (s->chr_update_read_handler) {
         s->chr_update_read_handler(s, context);
     }
 
-- 
2.10.0