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2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771 
 kernel/drivers/w1/w1.c
....@@ -1,15 +1,6 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * Copyright (c) 2004 Evgeniy Polyakov <zbr@ioremap.net>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
134  */
145 
156 #include <linux/delay.h>
....@@ -169,7 +160,7 @@
169160 	NULL,
170161 };
171162 
172
-static struct w1_family_ops w1_default_fops = {
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+static const struct w1_family_ops w1_default_fops = {
173164 	.groups		= w1_slave_default_groups,
174165 };
175166 
....@@ -622,7 +613,7 @@
622613 
623614 static int w1_family_notify(unsigned long action, struct w1_slave *sl)
624615 {
625
-	struct w1_family_ops *fops;
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+	const struct w1_family_ops *fops;
626617 	int err;
627618 
628619 	fops = sl->family->fops;
....@@ -1140,6 +1131,8 @@
11401131 	/* remainder if it woke up early */
11411132 	unsigned long jremain = 0;
11421133 
1134
+	atomic_inc(&dev->refcnt);
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+
11431136 	for (;;) {
11441137 
11451138 		if (!jremain && dev->search_count) {
....@@ -1167,8 +1160,10 @@
11671160 		 */
11681161 		mutex_unlock(&dev->list_mutex);
11691162 
1170
-		if (kthread_should_stop())
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+		if (kthread_should_stop()) {
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+			__set_current_state(TASK_RUNNING);
11711165 			break;
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+		}
11721167 
11731168 		/* Only sleep when the search is active. */
11741169 		if (dev->search_count) {
....@@ -1233,10 +1228,10 @@
12331228 
12341229 static void __exit w1_fini(void)
12351230 {
1236
-	struct w1_master *dev;
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+	struct w1_master *dev, *n;
12371232 
12381233 	/* Set netlink removal messages and some cleanup */
1239
-	list_for_each_entry(dev, &w1_masters, w1_master_entry)
1234
+	list_for_each_entry_safe(dev, n, &w1_masters, w1_master_entry)
12401235 		__w1_remove_master_device(dev);
12411236 
12421237 	w1_fini_netlink();