power: supply: core: get rid of of_node

This removes .of_node from 'struct power_supply', since there
is already a copy in .dev.of_node and there is no need to have
two copies.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250225-psy-core-convert-to-fwnode-v1-1-d5e4369936bb@collabora.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

Author: sre

drivers/power/supply/power_supply_core.c

@@ -200,11 +200,11 @@ static int __power_supply_populate_supplied_from(struct power_supply *epsy,
 	int i = 0;
 
 	do {
-		np = of_parse_phandle(psy->of_node, "power-supplies", i++);
+		np = of_parse_phandle(psy->dev.of_node, "power-supplies", i++);
 		if (!np)
 			break;
 
-		if (np == epsy->of_node) {
+		if (np == epsy->dev.of_node) {
 			dev_dbg(&psy->dev, "%s: Found supply : %s\n",
 				psy->desc->name, epsy->desc->name);
 			psy->supplied_from[i-1] = (char *)epsy->desc->name;
@@ -235,7 +235,7 @@ static int  __power_supply_find_supply_from_node(struct power_supply *epsy,
 	struct device_node *np = data;
 
 	/* returning non-zero breaks out of power_supply_for_each_psy loop */
-	if (epsy->of_node == np)
+	if (epsy->dev.of_node == np)
 		return 1;
 
 	return 0;
@@ -270,13 +270,13 @@ static int power_supply_check_supplies(struct power_supply *psy)
 		return 0;
 
 	/* No device node found, nothing to do */
-	if (!psy->of_node)
+	if (!psy->dev.of_node)
 		return 0;
 
 	do {
 		int ret;
 
-		np = of_parse_phandle(psy->of_node, "power-supplies", cnt++);
+		np = of_parse_phandle(psy->dev.of_node, "power-supplies", cnt++);
 		if (!np)
 			break;
 
@@ -593,8 +593,8 @@ int power_supply_get_battery_info(struct power_supply *psy,
 	const __be32 *list;
 	u32 min_max[2];
 
-	if (psy->of_node) {
-		battery_np = of_parse_phandle(psy->of_node, "monitored-battery", 0);
+	if (psy->dev.of_node) {
+		battery_np = of_parse_phandle(psy->dev.of_node, "monitored-battery", 0);
 		if (!battery_np)
 			return -ENODEV;
 
@@ -1531,9 +1531,8 @@ __power_supply_register(struct device *parent,
 	if (cfg) {
 		dev->groups = cfg->attr_grp;
 		psy->drv_data = cfg->drv_data;
-		psy->of_node =
+		dev->of_node =
 			cfg->fwnode ? to_of_node(cfg->fwnode) : cfg->of_node;
-		dev->of_node = psy->of_node;
 		psy->supplied_to = cfg->supplied_to;
 		psy->num_supplicants = cfg->num_supplicants;
 	}

include/linux/power_supply.h

@@ -315,7 +315,6 @@ struct power_supply {
 
 	char **supplied_from;
 	size_t num_supplies;
-	struct device_node *of_node;
 
 	/* Driver private data */
 	void *drv_data;