Input: db9 - clear unused function pointers

db9_parport_cb is a local uninitialized structure and the member
function pointers will be pointing to arbitrary locations unless they
are cleared.

Fixes: 2260c419b52b ("Input: db9 - use parallel port device model")
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/joystick/db9.c b/drivers/input/joystick/db9.c
index 932d073..da32609 100644 (file)
--- a/drivers/input/joystick/db9.c
+++ b/drivers/input/joystick/db9.c
@@ -592,6 +592,7 @@ static void db9_attach(struct parport *pp)
                return;
        }
 
+       memset(&db9_parport_cb, 0, sizeof(db9_parport_cb));
        db9_parport_cb.flags = PARPORT_FLAG_EXCL;
 
        pd = parport_register_dev_model(pp, "db9", &db9_parport_cb, port_idx);