TTY: call tty_port_destroy in the rest of drivers

After commit "TTY: move tty buffers to tty_port", the tty buffers are
not freed in some drivers. This is because tty_port_destructor is not
called whenever a tty_port is freed. This was an assumption I counted
with but was unfortunately untrue. So fix the drivers to fulfil this
assumption.

To be sure, the TTY buffers (and later some stuff) are gone along with
the tty_port, we have to call tty_port_destroy at tear-down places.
This is mostly where the structure containing a tty_port is freed.
This patch does exactly that -- put tty_port_destroy at those places.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index 70e3a525bc82..e4b5c39fc4ec 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -4425,6 +4425,7 @@ static void synclink_cleanup(void)
                 mgsl_release_resources(info);
                 tmp = info;
                 info = info->next_device;
+                tty_port_destroy(&tmp->port);
                 kfree(tmp);
         }