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, 2 insertions, 0 deletions

diff --git a/drivers/tty/ehv_bytechan.c b/drivers/tty/ehv_bytechan.c
index 4ab936b7aac6..4193afb74a02 100644
--- a/drivers/tty/ehv_bytechan.c
+++ b/drivers/tty/ehv_bytechan.c
@@ -757,6 +757,7 @@ static int __devinit ehv_bc_tty_probe(struct platform_device *pdev)
         return 0;
 
 error:
+        tty_port_destroy(&bc->port);
         irq_dispose_mapping(bc->tx_irq);
         irq_dispose_mapping(bc->rx_irq);
 
@@ -770,6 +771,7 @@ static int ehv_bc_tty_remove(struct platform_device *pdev)
 
         tty_unregister_device(ehv_bc_driver, bc - bcs);
 
+        tty_port_destroy(&bc->port);
         irq_dispose_mapping(bc->tx_irq);
         irq_dispose_mapping(bc->rx_irq);