linux-kernel - [PATCH v2] regulator: Set delay to 0 if set_voltage_time

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Message-ID: <1330095894.5102.1.camel@phoenix>
Date:	Fri, 24 Feb 2012 23:04:54 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Liam Girdwood <lrg@...com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH v2] 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@...il.com>
---
v2: show warning message if set_voltage_time_sel returns error.

 drivers/regulator/core.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index beeeb7f..19a4778 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1892,6 +1892,10 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
 			old_selector = ret;
 			delay = rdev->desc->ops->set_voltage_time_sel(rdev,
 						old_selector, selector);
+			if (delay < 0) {
+				rdev_warn(rdev, "set_voltage_time_sel() failed: %d\n", delay);
+				delay = 0;
+			}
 		}
 
 		if (best_val != INT_MAX) {
-- 
1.7.5.4



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