add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/macintosh/windfarm_smu_sensors.c
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@@ -1,10 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Windfarm PowerMac thermal control. SMU based sensors
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  *
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  * (c) Copyright 2005 Benjamin Herrenschmidt, IBM Corp.
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  *                    <benh@kernel.crashing.org>
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- *
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- * Released under the term of the GNU GPL v2.
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  */
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 #include <linux/types.h>
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@@ -197,15 +196,14 @@
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 static struct smu_ad_sensor *smu_ads_create(struct device_node *node)
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 {
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 	struct smu_ad_sensor *ads;
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-	const char *c, *l;
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+	const char *l;
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 	const u32 *v;
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 	ads = kmalloc(sizeof(struct smu_ad_sensor), GFP_KERNEL);
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 	if (ads == NULL)
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 		return NULL;
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-	c = of_get_property(node, "device_type", NULL);
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 	l = of_get_property(node, "location", NULL);
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-	if (c == NULL || l == NULL)
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+	if (l == NULL)
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 		goto fail;
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 	/* We currently pick the sensors based on the OF name and location
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@@ -215,7 +213,7 @@
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 	 * the names and locations consistents so I'll stick with the names
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 	 * and locations for now.
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 	 */
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-	if (!strcmp(c, "temp-sensor") &&
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+	if (of_node_is_type(node, "temp-sensor") &&
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 	    !strcmp(l, "CPU T-Diode")) {
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 		ads->sens.ops = &smu_cputemp_ops;
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 		ads->sens.name = "cpu-temp";
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@@ -224,7 +222,7 @@
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 			    SMU_SDB_CPUDIODE_ID);
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 			goto fail;
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 		}
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-	} else if (!strcmp(c, "current-sensor") &&
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+	} else if (of_node_is_type(node, "current-sensor") &&
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 		   !strcmp(l, "CPU Current")) {
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 		ads->sens.ops = &smu_cpuamp_ops;
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 		ads->sens.name = "cpu-current";
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@@ -233,7 +231,7 @@
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 			    SMU_SDB_CPUVCP_ID);
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 			goto fail;
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 		}
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-	} else if (!strcmp(c, "voltage-sensor") &&
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+	} else if (of_node_is_type(node, "voltage-sensor") &&
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 		   !strcmp(l, "CPU Voltage")) {
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 		ads->sens.ops = &smu_cpuvolt_ops;
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 		ads->sens.name = "cpu-voltage";
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@@ -242,7 +240,7 @@
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 			    SMU_SDB_CPUVCP_ID);
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 			goto fail;
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 		}
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-	} else if (!strcmp(c, "power-sensor") &&
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+	} else if (of_node_is_type(node, "power-sensor") &&
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 		   !strcmp(l, "Slots Power")) {
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 		ads->sens.ops = &smu_slotspow_ops;
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 		ads->sens.name = "slots-power";
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@@ -275,8 +273,8 @@
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 	struct list_head	link;
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 	struct wf_sensor	*volts;
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 	struct wf_sensor	*amps;
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-	int			fake_volts : 1;
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-	int			quadratic : 1;
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+	unsigned int		fake_volts : 1;
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+	unsigned int		quadratic : 1;
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 	struct wf_sensor	sens;
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 };
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 #define to_smu_cpu_power(c) container_of(c, struct smu_cpu_power_sensor, sens)
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@@ -423,9 +421,8 @@
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 		return -ENODEV;
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 	/* Look for sensors subdir */
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-	for (sensors = NULL;
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-	     (sensors = of_get_next_child(smu, sensors)) != NULL;)
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-		if (!strcmp(sensors->name, "sensors"))
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+	for_each_child_of_node(smu, sensors)
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+		if (of_node_name_eq(sensors, "sensors"))
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 			break;
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 	of_node_put(smu);