1 files changed, 7 insertions, 11 deletions

diff --git a/drivers/platform/x86/intel-wmi-thunderbolt.c b/drivers/platform/x86/intel-wmi-thunderbolt.c
index c2257bd06f18..9ded8e2af312 100644
--- a/drivers/platform/x86/intel-wmi-thunderbolt.c
+++ b/drivers/platform/x86/intel-wmi-thunderbolt.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * WMI Thunderbolt driver
  *
  * Copyright (C) 2017 Dell Inc. All Rights Reserved.
- *
- *  This program is free software; you can redistribute it and/or modify it
- *  under the terms of the GNU General Public License version 2 as published
- *  by the Free Software Foundation.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -38,12 +30,16 @@ static ssize_t force_power_store(struct device *dev,
         input.length = sizeof(u8);
         input.pointer = &mode;
         mode = hex_to_bin(buf[0]);
+        dev_dbg(dev, "force_power: storing %#x\n", mode);
         if (mode == 0 || mode == 1) {
                 status = wmi_evaluate_method(INTEL_WMI_THUNDERBOLT_GUID, 0, 1,
                                              &input, NULL);
-                if (ACPI_FAILURE(status))
+                if (ACPI_FAILURE(status)) {
+                        dev_dbg(dev, "force_power: failed to evaluate ACPI method\n");
                         return -ENODEV;
+                }
         } else {
+                dev_dbg(dev, "force_power: unsupported mode\n");
                 return -EINVAL;
         }
         return count;
@@ -95,4 +91,4 @@ module_wmi_driver(intel_wmi_thunderbolt_driver);
 MODULE_ALIAS("wmi:" INTEL_WMI_THUNDERBOLT_GUID);
 MODULE_AUTHOR("Mario Limonciello <mario.limonciello@dell.com>");
 MODULE_DESCRIPTION("Intel WMI Thunderbolt force power driver");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");