Input: joysticks - handle errors when registering input devices
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/joystick/grip_mp.c b/drivers/input/joystick/grip_mp.c
index 6243894..8120a9c 100644
--- a/drivers/input/joystick/grip_mp.c
+++ b/drivers/input/joystick/grip_mp.c
@@ -423,7 +423,10 @@
if (!port->registered) {
dbg("New Grip pad in multiport slot %d.\n", slot);
- register_slot(slot, grip);
+ if (register_slot(slot, grip)) {
+ port->mode = GRIP_MODE_RESET;
+ port->dirty = 0;
+ }
}
return flags;
}
@@ -585,6 +588,7 @@
struct grip_port *port = grip->port[slot];
struct input_dev *input_dev;
int j, t;
+ int err;
port->dev = input_dev = input_allocate_device();
if (!input_dev)
@@ -610,7 +614,12 @@
if (t > 0)
set_bit(t, input_dev->keybit);
- input_register_device(port->dev);
+ err = input_register_device(port->dev);
+ if (err) {
+ input_free_device(port->dev);
+ return err;
+ }
+
port->registered = 1;
if (port->dirty) /* report initial state, if any */