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/tty/vt/vt.c b/drivers/tty/vt/vt.c
index f87d7e8..607636b 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -779,6 +779,7 @@
con_set_default_unimap(vc);
vc->vc_screenbuf = kmalloc(vc->vc_screenbuf_size, GFP_KERNEL);
if (!vc->vc_screenbuf) {
+ tty_port_destroy(&vc->port);
kfree(vc);
vc_cons[currcons].d = NULL;
return -ENOMEM;
@@ -999,8 +1000,10 @@
put_pid(vc->vt_pid);
module_put(vc->vc_sw->owner);
kfree(vc->vc_screenbuf);
- if (currcons >= MIN_NR_CONSOLES)
+ if (currcons >= MIN_NR_CONSOLES) {
+ tty_port_destroy(&vc->port);
kfree(vc);
+ }
vc_cons[currcons].d = NULL;
}
}