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hc
2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e 
 kernel/drivers/platform/x86/samsung-laptop.c
....@@ -1,13 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Samsung Laptop driver
34  *
45  * Copyright (C) 2009,2011 Greg Kroah-Hartman (gregkh@suse.de)
56  * Copyright (C) 2009,2011 Novell Inc.
6
- *
7
- * This program is free software; you can redistribute it and/or modify it
8
- * under the terms of the GNU General Public License version 2 as published by
9
- * the Free Software Foundation.
10
- *
117  */
128 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
139 
....@@ -1125,8 +1121,6 @@
11251121 
11261122 	if (value > samsung->kbd_led.max_brightness)
11271123 		value = samsung->kbd_led.max_brightness;
1128
-	else if (value < 0)
1129
-		value = 0;
11301124 
11311125 	samsung->kbd_led_wk = value;
11321126 	queue_work(samsung->led_workqueue, &samsung->kbd_led_work);
....@@ -1142,8 +1136,7 @@
11421136 
11431137 static void samsung_leds_exit(struct samsung_laptop *samsung)
11441138 {
1145
-	if (!IS_ERR_OR_NULL(samsung->kbd_led.dev))
1146
-		led_classdev_unregister(&samsung->kbd_led);
1139
+	led_classdev_unregister(&samsung->kbd_led);
11471140 	if (samsung->led_workqueue)
11481141 		destroy_workqueue(samsung->led_workqueue);
11491142 }
....@@ -1280,15 +1273,12 @@
12801273 	debugfs_remove_recursive(samsung->debug.root);
12811274 }
12821275 
1283
-static int samsung_debugfs_init(struct samsung_laptop *samsung)
1276
+static void samsung_debugfs_init(struct samsung_laptop *samsung)
12841277 {
1285
-	struct dentry *dent;
1278
+	struct dentry *root;
12861279 
1287
-	samsung->debug.root = debugfs_create_dir("samsung-laptop", NULL);
1288
-	if (!samsung->debug.root) {
1289
-		pr_err("failed to create debugfs directory");
1290
-		goto error_debugfs;
1291
-	}
1280
+	root = debugfs_create_dir("samsung-laptop", NULL);
1281
+	samsung->debug.root = root;
12921282 
12931283 	samsung->debug.f0000_wrapper.data = samsung->f0000_segment;
12941284 	samsung->debug.f0000_wrapper.size = 0xffff;
....@@ -1299,60 +1289,24 @@
12991289 	samsung->debug.sdiag_wrapper.data = samsung->sdiag;
13001290 	samsung->debug.sdiag_wrapper.size = strlen(samsung->sdiag);
13011291 
1302
-	dent = debugfs_create_u16("command", S_IRUGO | S_IWUSR,
1303
-				  samsung->debug.root, &samsung->debug.command);
1304
-	if (!dent)
1305
-		goto error_debugfs;
1306
-
1307
-	dent = debugfs_create_u32("d0", S_IRUGO | S_IWUSR, samsung->debug.root,
1308
-				  &samsung->debug.data.d0);
1309
-	if (!dent)
1310
-		goto error_debugfs;
1311
-
1312
-	dent = debugfs_create_u32("d1", S_IRUGO | S_IWUSR, samsung->debug.root,
1313
-				  &samsung->debug.data.d1);
1314
-	if (!dent)
1315
-		goto error_debugfs;
1316
-
1317
-	dent = debugfs_create_u16("d2", S_IRUGO | S_IWUSR, samsung->debug.root,
1318
-				  &samsung->debug.data.d2);
1319
-	if (!dent)
1320
-		goto error_debugfs;
1321
-
1322
-	dent = debugfs_create_u8("d3", S_IRUGO | S_IWUSR, samsung->debug.root,
1323
-				 &samsung->debug.data.d3);
1324
-	if (!dent)
1325
-		goto error_debugfs;
1326
-
1327
-	dent = debugfs_create_blob("data", S_IRUGO | S_IWUSR,
1328
-				   samsung->debug.root,
1329
-				   &samsung->debug.data_wrapper);
1330
-	if (!dent)
1331
-		goto error_debugfs;
1332
-
1333
-	dent = debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR,
1334
-				   samsung->debug.root,
1335
-				   &samsung->debug.f0000_wrapper);
1336
-	if (!dent)
1337
-		goto error_debugfs;
1338
-
1339
-	dent = debugfs_create_file("call", S_IFREG | S_IRUGO,
1340
-				   samsung->debug.root, samsung,
1341
-				   &samsung_laptop_call_fops);
1342
-	if (!dent)
1343
-		goto error_debugfs;
1344
-
1345
-	dent = debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR,
1346
-				   samsung->debug.root,
1347
-				   &samsung->debug.sdiag_wrapper);
1348
-	if (!dent)
1349
-		goto error_debugfs;
1350
-
1351
-	return 0;
1352
-
1353
-error_debugfs:
1354
-	samsung_debugfs_exit(samsung);
1355
-	return -ENOMEM;
1292
+	debugfs_create_u16("command", S_IRUGO | S_IWUSR, root,
1293
+			   &samsung->debug.command);
1294
+	debugfs_create_u32("d0", S_IRUGO | S_IWUSR, root,
1295
+			   &samsung->debug.data.d0);
1296
+	debugfs_create_u32("d1", S_IRUGO | S_IWUSR, root,
1297
+			   &samsung->debug.data.d1);
1298
+	debugfs_create_u16("d2", S_IRUGO | S_IWUSR, root,
1299
+			   &samsung->debug.data.d2);
1300
+	debugfs_create_u8("d3", S_IRUGO | S_IWUSR, root,
1301
+			  &samsung->debug.data.d3);
1302
+	debugfs_create_blob("data", S_IRUGO | S_IWUSR, root,
1303
+			    &samsung->debug.data_wrapper);
1304
+	debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR, root,
1305
+			    &samsung->debug.f0000_wrapper);
1306
+	debugfs_create_file("call", S_IFREG | S_IRUGO, root, samsung,
1307
+			    &samsung_laptop_call_fops);
1308
+	debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR, root,
1309
+			    &samsung->debug.sdiag_wrapper);
13561310 }
13571311 
13581312 static void samsung_sabi_exit(struct samsung_laptop *samsung)
....@@ -1437,7 +1391,7 @@
14371391 	int ret = 0;
14381392 	int i;
14391393 
1440
-	samsung->f0000_segment = ioremap_nocache(0xf0000, 0xffff);
1394
+	samsung->f0000_segment = ioremap(0xf0000, 0xffff);
14411395 	if (!samsung->f0000_segment) {
14421396 		if (debug || force)
14431397 			pr_err("Can't map the segment at 0xf0000\n");
....@@ -1477,7 +1431,7 @@
14771431 	if (debug)
14781432 		samsung_sabi_infos(samsung, loca, ifaceP);
14791433 
1480
-	samsung->sabi_iface = ioremap_nocache(ifaceP, 16);
1434
+	samsung->sabi_iface = ioremap(ifaceP, 16);
14811435 	if (!samsung->sabi_iface) {
14821436 		pr_err("Can't remap %x\n", ifaceP);
14831437 		ret = -EINVAL;
....@@ -1745,9 +1699,7 @@
17451699 	if (ret)
17461700 		goto error_lid_handling;
17471701 
1748
-	ret = samsung_debugfs_init(samsung);
1749
-	if (ret)
1750
-		goto error_debugfs;
1702
+	samsung_debugfs_init(samsung);
17511703 
17521704 	samsung->pm_nb.notifier_call = samsung_pm_notification;
17531705 	register_pm_notifier(&samsung->pm_nb);
....@@ -1755,8 +1707,6 @@
17551707 	samsung_platform_device = samsung->platform_device;
17561708 	return ret;
17571709 
1758
-error_debugfs:
1759
-	samsung_lid_handling_exit(samsung);
17601710 error_lid_handling:
17611711 	samsung_leds_exit(samsung);
17621712 error_leds: