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/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c
index 30ec09e..877fbc3 100644
--- a/drivers/s390/char/sclp_tty.c
+++ b/drivers/s390/char/sclp_tty.c
@@ -547,7 +547,6 @@
sclp_tty_tolower = 1;
}
sclp_tty_chars_count = 0;
- tty_port_init(&sclp_port);
rc = sclp_register(&sclp_input_event);
if (rc) {
@@ -555,6 +554,8 @@
return rc;
}
+ tty_port_init(&sclp_port);
+
driver->driver_name = "sclp_line";
driver->name = "sclp_line";
driver->major = TTY_MAJOR;
@@ -571,6 +572,7 @@
rc = tty_register_driver(driver);
if (rc) {
put_tty_driver(driver);
+ tty_port_destroy(&sclp_port);
return rc;
}
sclp_tty_driver = driver;