From: Guido Günther <agx@sigxcpu.org>
Date: Sat, 21 Sep 2019 21:12:10 +0000 (-0700)
Subject: leds: lm3692x: Handle failure to probe the regulator
X-Git-Tag: v5.4.8~158
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=af4eac2a2871a97f6284f816930ab612bbd6c01c;p=thirdparty%2Fkernel%2Fstable.git

leds: lm3692x: Handle failure to probe the regulator

[ Upstream commit 396128d2ffcba6e1954cfdc9a89293ff79cbfd7c ]

Instead use devm_regulator_get_optional since the regulator
is optional and check for errors.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c
index 3d381f2f73d04..1ac9a44570eed 100644
--- a/drivers/leds/leds-lm3692x.c
+++ b/drivers/leds/leds-lm3692x.c
@@ -334,9 +334,18 @@ static int lm3692x_probe_dt(struct lm3692x_led *led)
 		return ret;
 	}
 
-	led->regulator = devm_regulator_get(&led->client->dev, "vled");
-	if (IS_ERR(led->regulator))
+	led->regulator = devm_regulator_get_optional(&led->client->dev, "vled");
+	if (IS_ERR(led->regulator)) {
+		ret = PTR_ERR(led->regulator);
+		if (ret != -ENODEV) {
+			if (ret != -EPROBE_DEFER)
+				dev_err(&led->client->dev,
+					"Failed to get vled regulator: %d\n",
+					ret);
+			return ret;
+		}
 		led->regulator = NULL;
+	}
 
 	child = device_get_next_child_node(&led->client->dev, child);
 	if (!child) {