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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2015-06-24 17:27:43 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2015-06-26 15:07:45 +0300 |
| commit | 0fd72ff92d6bea32bba612744abbe6a0abd25e43 (patch) | |
| tree | b72ae44db2ca1bfad59a1e968955cb66ae5096fd | |
| parent | 67db8a8086e9b865533348954f5547f1e433101e (diff) | |
| download | linux-0fd72ff92d6bea32bba612744abbe6a0abd25e43.tar.xz | |
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>
| -rw-r--r-- | drivers/hid/wacom_sys.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c index 4c0ffca97bef..44958d79d598 100644 --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -1271,11 +1271,13 @@ fail_leds: pad_input_dev = NULL; wacom_wac->pad_registered = false; fail_register_pad_input: - input_unregister_device(touch_input_dev); + if (touch_input_dev) + input_unregister_device(touch_input_dev); wacom_wac->touch_input = NULL; wacom_wac->touch_registered = false; fail_register_touch_input: - input_unregister_device(pen_input_dev); + if (pen_input_dev) + input_unregister_device(pen_input_dev); wacom_wac->pen_input = NULL; wacom_wac->pen_registered = false; fail_register_pen_input: |