[PATCH 04/10] fixup! power: supply: core: battery-info: fully switch to fwnode

[Hans de Goede <hansg@kernel.org>]

After ("power: supply: core: battery-info: fully switch to fwnode")
power_supply_get_battery_info() will always fail for battery fwnodes
which do not define a "resistance-temp-table".

Fix this by cleanly exiting on both 0 and EINVAL returns from
fwnode_property_count_u32(fwnode, "resistance-temp-table") which
indicates that the property is empty or not there.

While at it also fix:

1. The weird -ENOMEM return for other errors. For other errors
propagate the existing error or -EINVAL for an odd proplen.
2. Wrongly using "goto out_ret_pointer" on errors, out_ret_pointer
should only be used on success, error paths should use
out_put_node;

Signed-off-by: Hans de Goede <hansg@kernel.org>
---
 drivers/power/supply/power_supply_core.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
index a8d1fe66e248..9bbc3be2e483 100644
--- a/drivers/power/supply/power_supply_core.c
+++ b/drivers/power/supply/power_supply_core.c
@@ -795,19 +795,20 @@ int power_supply_get_battery_info(struct power_supply *psy,
 	}
 
 	proplen = fwnode_property_count_u32(fwnode, "resistance-temp-table");
-	if (proplen < 0 || proplen % 2 != 0) {
+	if (proplen == 0 || proplen == -EINVAL) {
+		err = 0;
+		goto out_ret_pointer;
+	} else if (proplen < 0 || proplen % 2 != 0) {
 		power_supply_put_battery_info(psy, info);
-		err = -ENOMEM;
-		goto out_ret_pointer;
-	} else if (proplen == 0) {
-		goto out_ret_pointer;
+		err = (proplen < 0) ? proplen : -EINVAL;
+		goto out_put_node;
 	}
 
 	propdata = kcalloc(proplen, sizeof(*propdata), GFP_KERNEL);
 	if (!propdata) {
 		power_supply_put_battery_info(psy, info);
 		err = -ENOMEM;
-		goto out_ret_pointer;
+		goto out_put_node;
 	}
 
 	err = fwnode_property_read_u32_array(fwnode, "resistance-temp-table",
-- 
2.49.0