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/nozomi.c b/drivers/tty/nozomi.c
index b917c94..cb764d2 100644
--- a/drivers/tty/nozomi.c
+++ b/drivers/tty/nozomi.c
@@ -1479,6 +1479,7 @@
if (IS_ERR(tty_dev)) {
ret = PTR_ERR(tty_dev);
dev_err(&pdev->dev, "Could not allocate tty?\n");
+ tty_port_destroy(&port->port);
goto err_free_tty;
}
}
@@ -1486,8 +1487,10 @@
return 0;
err_free_tty:
- for (i = dc->index_start; i < dc->index_start + MAX_PORT; ++i)
- tty_unregister_device(ntty_driver, i);
+ for (i = 0; i < MAX_PORT; ++i) {
+ tty_unregister_device(ntty_driver, dc->index_start + i);
+ tty_port_destroy(&dc->port[i].port);
+ }
err_free_kfifo:
for (i = 0; i < MAX_PORT; i++)
kfifo_free(&dc->port[i].fifo_ul);
@@ -1520,8 +1523,10 @@
complete off a hangup method ? */
while (dc->open_ttys)
msleep(1);
- for (i = dc->index_start; i < dc->index_start + MAX_PORT; ++i)
- tty_unregister_device(ntty_driver, i);
+ for (i = 0; i < MAX_PORT; ++i) {
+ tty_unregister_device(ntty_driver, dc->index_start + i);
+ tty_port_destroy(&dc->port[i].port);
+ }
}
/* Deallocate memory for one device */