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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/macintosh/windfarm_smu_sat.c
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@@ -1,9 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Windfarm PowerMac thermal control.  SMU "satellite" controller sensors.
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  *
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  * Copyright (C) 2005 Paul Mackerras, IBM Corp. <paulus@samba.org>
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- *
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- * Released under the terms of the GNU GPL v2.
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  */
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 #include <linux/types.h>
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@@ -172,6 +171,7 @@
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 	if (sat->nr >= 0)
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 		sats[sat->nr] = NULL;
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+	of_node_put(sat->node);
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 	kfree(sat);
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 }
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@@ -197,7 +197,7 @@
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 	struct wf_sat *sat;
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 	struct wf_sat_sensor *sens;
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 	const u32 *reg;
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-	const char *loc, *type;
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+	const char *loc;
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 	u8 chip, core;
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 	struct device_node *child;
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 	int shift, cpu, index;
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@@ -217,10 +217,8 @@
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 	vsens[0] = vsens[1] = -1;
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 	isens[0] = isens[1] = -1;
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-	child = NULL;
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-	while ((child = of_get_next_child(dev, child)) != NULL) {
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+	for_each_child_of_node(dev, child) {
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 		reg = of_get_property(child, "reg", NULL);
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-		type = of_get_property(child, "device_type", NULL);
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 		loc = of_get_property(child, "location", NULL);
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 		if (reg == NULL || loc == NULL)
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 			continue;
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@@ -249,15 +247,15 @@
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 			continue;
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 		}
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-		if (strcmp(type, "voltage-sensor") == 0) {
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+		if (of_node_is_type(child, "voltage-sensor")) {
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 			name = "cpu-voltage";
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 			shift = 4;
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 			vsens[core] = index;
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-		} else if (strcmp(type, "current-sensor") == 0) {
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+		} else if (of_node_is_type(child, "current-sensor")) {
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 			name = "cpu-current";
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 			shift = 8;
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 			isens[core] = index;
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-		} else if (strcmp(type, "temp-sensor") == 0) {
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+		} else if (of_node_is_type(child, "temp-sensor")) {
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 			name = "cpu-temp";
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 			shift = 10;
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 		} else