[PATCH] leds: lm3532: Fix optional led-max-microamp prop error handling

[Dan Murphy]

Fix the error handling for the led-max-microamp property.
Need to check if the property is present and then if it is
retrieve the setting and its max boundary

Reported-by: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Dan Murphy <dmurphy@xxxxxx>
---
 drivers/leds/leds-lm3532.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/leds/leds-lm3532.c b/drivers/leds/leds-lm3532.c
index c5cfd8e3f15f..13b4265fb85a 100644
--- a/drivers/leds/leds-lm3532.c
+++ b/drivers/leds/leds-lm3532.c
@@ -601,11 +601,15 @@ static int lm3532_parse_node(struct lm3532_data *priv)
 			goto child_out;
 		}
 
-		ret = fwnode_property_read_u32(child, "led-max-microamp",
-					       &led->full_scale_current);
-
-		if (led->full_scale_current > LM3532_FS_CURR_MAX)
-			led->full_scale_current = LM3532_FS_CURR_MAX;
+		if (fwnode_property_present(child, "led-max-microamp")) {
+			if (fwnode_property_read_u32(child, "led-max-microamp",
+						     &led->full_scale_current))
+				dev_err(&priv->client->dev,
+					"Failed getting led-max-microamp\n");
+
+			if (led->full_scale_current > LM3532_FS_CURR_MAX)
+				led->full_scale_current = LM3532_FS_CURR_MAX;
+		}
 
 		if (led->mode == LM3532_BL_MODE_ALS) {
 			led->mode = LM3532_ALS_CTRL;
-- 
2.22.0.214.g8dca754b1e