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, 4 insertions, 1 deletions

diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index b38e954eedd3..6e4c34011b7e 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -3645,8 +3645,10 @@ static void device_init(int adapter_num, struct pci_dev *pdev)
         for (i=0; i < port_count; ++i) {
                 port_array[i] = alloc_dev(adapter_num, i, pdev);
                 if (port_array[i] == NULL) {
-                        for (--i; i >= 0; --i)
+                        for (--i; i >= 0; --i) {
+                                tty_port_destroy(&port_array[i]->port);
                                 kfree(port_array[i]);
+                        }
                         return;
                 }
         }
@@ -3773,6 +3775,7 @@ static void slgt_cleanup(void)
                         release_resources(info);
                 tmp = info;
                 info = info->next_device;
+                tty_port_destroy(&tmp->port);
                 kfree(tmp);
         }