This patch adds null check before actually unregistering the input device to avoid null pointer exception which leads to kernel panic.
So now, input device drivers won't have to worry about or add null case condition before calling input_unregister_device() in shutdown and remove functions. Signed-off-by: Aniroop Mathur <[email protected]> --- drivers/input/input.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/input/input.c b/drivers/input/input.c index 01fe49e..575219d 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -2170,6 +2170,9 @@ EXPORT_SYMBOL(input_register_device); */ void input_unregister_device(struct input_dev *dev) { + if (!dev) + return; + if (dev->devres_managed) { WARN_ON(devres_destroy(dev->dev.parent, devm_input_device_unregister, -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
