From 0fd72ff92d6bea32bba612744abbe6a0abd25e43 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 24 Jun 2015 17:27:43 +0300
Subject: [PATCH] HID: wacom: NULL dereferences on error in probe()

We can't pass a NULL to input_unregister_device().

Fixes: 2a6cdbdd4cc0 ('HID: wacom: Introduce new 'touch_input' device')

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Reading git-format-patch failed