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path: root/drivers/platform/x86/intel-wmi-thunderbolt.c
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Diffstat (limited to 'drivers/platform/x86/intel-wmi-thunderbolt.c')
-rw-r--r--drivers/platform/x86/intel-wmi-thunderbolt.c18
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");