From: Axel Lin <axel.lin@gmail.com>
Date: Fri, 24 Feb 2012 15:13:19 +0000 (+0800)
Subject: regulator: Set delay to 0 if set_voltage_time_sel callback returns error
X-Git-Tag: firefly_0821_release~3680^2~3139^2~23
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=073512336e6333ffcaabbb2b92f8e616db3a0789;p=firefly-linux-kernel-4.4.55.git

regulator: Set delay to 0 if set_voltage_time_sel callback returns error

rdev->desc->ops->set_voltage_time_sel may return negative error code.
Set delay to 0 and also show warning if set_voltage_time_sel returns error.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 603e39f81ce0..b97c4a256636 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1836,8 +1836,12 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
 			if (ret < 0)
 				return ret;
 			old_selector = ret;
-			delay = rdev->desc->ops->set_voltage_time_sel(rdev,
+			ret = rdev->desc->ops->set_voltage_time_sel(rdev,
 						old_selector, selector);
+			if (ret < 0)
+				rdev_warn(rdev, "set_voltage_time_sel() failed: %d\n", ret);
+			else
+				delay = ret;
 		}
 
 		if (best_val != INT_MAX) {