linux-kernel - [PATCH v2] power: charger-manager: regulator

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Date:	Tue, 25 Jun 2013 14:18:14 +0900
From:	Jonghwa Lee <jonghwa3.lee@...sung.com>
To:	anton.vorontsov@...aro.org
Cc:	linux-kernel@...r.kernel.org,
	Jonghwa Lee <jonghwa3.lee@...sung.com>,
	Myungjoo Ham <myungjoo.ham@...sung.com>
Subject: [PATCH v2] power: charger-manager: regulator_get() never returns NULL.

This patch fixes return value checking of regulator_get() in charger-manager
driver. The API, regulator_get(), returns ERR_PTR() when it fails to get
regulator with given name, not NULL.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@...sung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@...sung.com>
---
v2:
 - Fix return value to use API's directly with PTR_ERR().

 drivers/power/charger-manager.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c
index ba42029..0a4cce3 100644
--- a/drivers/power/charger-manager.c
+++ b/drivers/power/charger-manager.c
@@ -1239,11 +1239,10 @@ static int charger_manager_register_extcon(struct charger_manager *cm)
 
 		charger->consumer = regulator_get(cm->dev,
 					charger->regulator_name);
-		if (charger->consumer == NULL) {
+		if (IS_ERR(charger->consumer)) {
 			dev_err(cm->dev, "Cannot find charger(%s)\n",
 				charger->regulator_name);
-			ret = -EINVAL;
-			goto err;
+			return PTR_ERR(charger->consumer);
 		}
 		charger->cm = cm;
 
-- 
1.7.9.5

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