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Message-ID: <202601210634.oa0j58TO-lkp@intel.com>
Date: Wed, 21 Jan 2026 06:56:19 +0800
From: kernel test robot <lkp@...el.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
Len Brown <lenb@...nel.org>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v1 1/1] ACPI: video: simplify code with
acpi_get_local_u64_address()
Hi Andy,
kernel test robot noticed the following build warnings:
[auto build test WARNING on rafael-pm/linux-next]
[also build test WARNING on rafael-pm/bleeding-edge linus/master v6.19-rc6 next-20260120]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Andy-Shevchenko/ACPI-video-simplify-code-with-acpi_get_local_u64_address/20260121-015338
base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
patch link: https://lore.kernel.org/r/20260120154008.1763983-1-andriy.shevchenko%40linux.intel.com
patch subject: [PATCH v1 1/1] ACPI: video: simplify code with acpi_get_local_u64_address()
config: i386-defconfig (https://download.01.org/0day-ci/archive/20260121/202601210634.oa0j58TO-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260121/202601210634.oa0j58TO-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601210634.oa0j58TO-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/acpi/acpi_video.c:1137:14: warning: unused variable 'status' [-Wunused-variable]
1137 | acpi_status status;
| ^~~~~~
1 warning generated.
vim +/status +1137 drivers/acpi/acpi_video.c
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1131
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1132 static int acpi_video_bus_get_one_device(struct acpi_device *device, void *arg)
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1133 {
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1134 struct acpi_video_bus *video = arg;
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1135 struct acpi_video_device_attrib *attribute;
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1136 struct acpi_video_device *data;
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 @1137 acpi_status status;
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1138 int device_type;
6a9c39632cf1cd drivers/acpi/acpi_video.c Andy Shevchenko 2026-01-20 1139 u64 device_id;
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1140
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1141 /* Skip devices without _ADR instead of failing. */
6a9c39632cf1cd drivers/acpi/acpi_video.c Andy Shevchenko 2026-01-20 1142 if (acpi_get_local_u64_address(device->handle, &device_id))
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1143 goto exit;
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1144
36bcbec7ce21e2 drivers/acpi/video.c Burman Yan 2006-12-19 1145 data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL);
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1146 if (!data) {
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1147 dev_dbg(&device->dev, "Cannot attach\n");
d550d98d331737 drivers/acpi/video.c Patrick Mochel 2006-06-27 1148 return -ENOMEM;
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1149 }
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1150
cfc38d432dba56 drivers/acpi/acpi_video.c Muhammad Qasim Abdul Majeed 2024-07-03 1151 strscpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME);
cfc38d432dba56 drivers/acpi/acpi_video.c Muhammad Qasim Abdul Majeed 2024-07-03 1152 strscpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1153
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1154 data->device_id = device_id;
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1155 data->video = video;
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1156 data->dev = device;
8ab58e8e7e097b drivers/acpi/video.c Linus Torvalds 2014-07-18 1157 INIT_DELAYED_WORK(&data->switch_brightness_work,
8ab58e8e7e097b drivers/acpi/video.c Linus Torvalds 2014-07-18 1158 acpi_video_switch_brightness);
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1159
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1160 attribute = acpi_video_get_device_attr(video, device_id);
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1161
e50b9be14ab0ed drivers/acpi/acpi_video.c Aaron Lu 2015-10-28 1162 if (attribute && (attribute->device_id_scheme || device_id_scheme)) {
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1163 switch (attribute->display_type) {
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1164 case ACPI_VIDEO_DISPLAY_CRT:
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1165 data->flags.crt = 1;
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1166 break;
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1167 case ACPI_VIDEO_DISPLAY_TV:
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1168 data->flags.tvout = 1;
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1169 break;
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1170 case ACPI_VIDEO_DISPLAY_DVI:
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1171 data->flags.dvi = 1;
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1172 break;
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1173 case ACPI_VIDEO_DISPLAY_LCD:
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1174 data->flags.lcd = 1;
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1175 break;
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1176 default:
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1177 data->flags.unknown = 1;
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1178 break;
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1179 }
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1180 if (attribute->bios_can_detect)
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1181 data->flags.bios = 1;
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1182 } else {
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1183 /* Check for legacy IDs */
91e13aa3702343 drivers/acpi/video.c Aaron Lu 2013-04-25 1184 device_type = acpi_video_get_device_type(video, device_id);
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1185 /* Ignore bits 16 and 18-20 */
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1186 switch (device_type & 0xffe2ffff) {
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1187 case ACPI_VIDEO_DISPLAY_LEGACY_MONITOR:
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1188 data->flags.crt = 1;
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1189 break;
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1190 case ACPI_VIDEO_DISPLAY_LEGACY_PANEL:
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1191 data->flags.lcd = 1;
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1192 break;
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1193 case ACPI_VIDEO_DISPLAY_LEGACY_TV:
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1194 data->flags.tvout = 1;
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1195 break;
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1196 default:
82cae99980c158 drivers/acpi/video.c Rui Zhang 2007-01-03 1197 data->flags.unknown = 1;
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1198 }
e92a7162402589 drivers/acpi/video.c Matthew Garrett 2010-01-12 1199 }
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1200
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1201 acpi_video_device_bind(video, data);
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1202 acpi_video_device_find_cap(data);
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1203
3a0cf7ab8df387 drivers/acpi/acpi_video.c Hans de Goede 2022-06-24 1204 if (data->cap._BCM && data->cap._BCL)
5ad26161a371e4 drivers/acpi/acpi_video.c Hans de Goede 2022-07-13 1205 may_report_brightness_keys = true;
3a0cf7ab8df387 drivers/acpi/acpi_video.c Hans de Goede 2022-06-24 1206
bbac81f5487175 drivers/acpi/video.c Dmitry Torokhov 2007-11-05 1207 mutex_lock(&video->device_list_lock);
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1208 list_add_tail(&data->entry, &video->video_device_list);
bbac81f5487175 drivers/acpi/video.c Dmitry Torokhov 2007-11-05 1209 mutex_unlock(&video->device_list_lock);
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1210
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1211 exit:
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1212 video->child_count++;
0ea3ef240c4911 drivers/acpi/acpi_video.c Rafael J. Wysocki 2022-06-13 1213 return 0;
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1214 }
^1da177e4c3f41 drivers/acpi/video.c Linus Torvalds 2005-04-16 1215
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