linux-kernel - [PATCH] power_supply: pda_power: Complain if regulator operations fail

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Message-Id: <1336411313-13558-1-git-send-email-broonie@opensource.wolfsonmicro.com>
Date:	Mon,  7 May 2012 18:21:53 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Anton Vorontsov <cbou@...l.ru>
Cc:	linux-kernel@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH] power_supply: pda_power: Complain if regulator operations fail

Rather than silently ignoring errors from the regulator enable and disable
add a WARN_ON() - it's probably pretty important if we're not getting
power, though it should be vanishingly unlikely in production.

Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
 drivers/power/pda_power.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c
index 214468f..ed54a35 100644
--- a/drivers/power/pda_power.c
+++ b/drivers/power/pda_power.c
@@ -134,13 +134,13 @@ static void update_charger(void)
 			regulator_set_current_limit(ac_draw, max_uA, max_uA);
 			if (!regulator_enabled) {
 				dev_dbg(dev, "charger on (AC)\n");
-				regulator_enable(ac_draw);
+				WARN_ON(regulator_enable(ac_draw));
 				regulator_enabled = 1;
 			}
 		} else {
 			if (regulator_enabled) {
 				dev_dbg(dev, "charger off\n");
-				regulator_disable(ac_draw);
+				WARN_ON(regulator_disable(ac_draw));
 				regulator_enabled = 0;
 			}
 		}
-- 
1.7.10

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