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>
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index b817809..e09dc8a 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1849,6 +1849,8 @@
kfree(info->fax);
#endif
kfree(info->port.xmit_buf - 4);
+ info->port.xmit_buf = NULL;
+ tty_port_destroy(&info->port);
}
tty_unregister_driver(m->tty_modem);
err:
@@ -1870,6 +1872,8 @@
kfree(info->fax);
#endif
kfree(info->port.xmit_buf - 4);
+ info->port.xmit_buf = NULL;
+ tty_port_destroy(&info->port);
}
tty_unregister_driver(dev->mdm.tty_modem);
put_tty_driver(dev->mdm.tty_modem);