From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Wed, 28 Nov 2012 17:09:27 +0000 (+0000)
Subject: regulator: core: Log when a device causes a voltage constraint fail
X-Git-Tag: firefly_0821_release~3680^2~1470^2~19^2~1
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=dd8004af2b0e903b2ee9fce305cb615245fa12ee;p=firefly-linux-kernel-4.4.55.git

regulator: core: Log when a device causes a voltage constraint fail

Helps with figuring out when things went wrong.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index e872c8be080e..e7fffd15953f 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -199,8 +199,11 @@ static int regulator_check_consumers(struct regulator_dev *rdev,
 			*min_uV = regulator->min_uV;
 	}
 
-	if (*min_uV > *max_uV)
+	if (*min_uV > *max_uV) {
+		dev_err(regulator->dev, "Restricting voltage, %u-%uuV\n",
+			regulator->min_uV, regulator->max_uV);
 		return -EINVAL;
+	}
 
 	return 0;
 }