HID: wacom: Add error check to wacom_parse_and_register()

   Added a variable check and
   transition in case of an error

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Denis Arefev <arefev@swemel.ru>
Reviewed-by: Ping Cheng <ping.cheng@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 7192970..76e5353 100644 (file)
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -2414,8 +2414,13 @@ static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
                goto fail_quirks;
        }
 
-       if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
+       if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) {
                error = hid_hw_open(hdev);
+               if (error) {
+                       hid_err(hdev, "hw open failed\n");
+                       goto fail_quirks;
+               }
+       }
 
        wacom_set_shared_values(wacom_wac);
        devres_close_group(&hdev->dev, wacom);