power_supply: ab8500: Use power_supply_*() API for accessing function…

… attrs

Replace direct calls to power supply function attributes with wrappers.
Wrappers provide safe access in case of unregistering the power
supply (e.g. by removing the driver). Replace:
 - get_property -> power_supply_get_property

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

drivers/power/ab8500_btemp.c

@@ -938,7 +938,7 @@ static int ab8500_btemp_get_ext_psy_data(struct device *dev, void *data)
 		enum power_supply_property prop;
 		prop = ext->properties[j];
 
-		if (ext->get_property(ext, prop, &ret))
+		if (power_supply_get_property(ext, prop, &ret))
 			continue;
 
 		switch (prop) {

drivers/power/ab8500_charger.c

@@ -1957,7 +1957,7 @@ static int ab8500_charger_get_ext_psy_data(struct device *dev, void *data)
 		enum power_supply_property prop;
 		prop = ext->properties[j];
 
-		if (ext->get_property(ext, prop, &ret))
+		if (power_supply_get_property(ext, prop, &ret))
 			continue;
 
 		switch (prop) {

drivers/power/ab8500_fg.c

@@ -2200,7 +2200,7 @@ static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data)
 		enum power_supply_property prop;
 		prop = ext->properties[j];
 
-		if (ext->get_property(ext, prop, &ret))
+		if (power_supply_get_property(ext, prop, &ret))
 			continue;
 
 		switch (prop) {

drivers/power/abx500_chargalg.c

@@ -1001,7 +1001,7 @@ static int abx500_chargalg_get_ext_psy_data(struct device *dev, void *data)
 	 * property because of handling that sysfs entry on its own, this is
 	 * the place to get the battery capacity.
 	 */
-	if (!ext->get_property(ext, POWER_SUPPLY_PROP_CAPACITY, &ret)) {
+	if (!power_supply_get_property(ext, POWER_SUPPLY_PROP_CAPACITY, &ret)) {
 		di->batt_data.percent = ret.intval;
 		capacity_updated = true;
 	}
@@ -1019,7 +1019,7 @@ static int abx500_chargalg_get_ext_psy_data(struct device *dev, void *data)
 			ext->type == POWER_SUPPLY_TYPE_USB)
 			di->usb_chg = psy_to_ux500_charger(ext);
 
-		if (ext->get_property(ext, prop, &ret))
+		if (power_supply_get_property(ext, prop, &ret))
 			continue;
 		switch (prop) {
 		case POWER_SUPPLY_PROP_PRESENT: