linux-kernel - [PATCH] hwmon: (ad7414) Return proper error code for ad7414

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Date:	Tue, 09 Nov 2010 09:40:34 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Jean Delvare <khali@...ux-fr.org>,
	Sean MacLennan <smaclennan@...atech.com>,
	lm-sensors@...sensors.org
Subject: [PATCH] hwmon: (ad7414) Return proper error code for ad7414_probe()

Return proper error if i2c_check_functionality reports
the adapter does not support the capability we need.

Also remove unneeded initialization for err variable.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/hwmon/ad7414.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/ad7414.c b/drivers/hwmon/ad7414.c
index 1e4c21f..86d822a 100644
--- a/drivers/hwmon/ad7414.c
+++ b/drivers/hwmon/ad7414.c
@@ -178,11 +178,13 @@ static int ad7414_probe(struct i2c_client *client,
 {
 	struct ad7414_data *data;
 	int conf;
-	int err = 0;
+	int err;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA |
-				     I2C_FUNC_SMBUS_READ_WORD_DATA))
+				     I2C_FUNC_SMBUS_READ_WORD_DATA)) {
+		err = -EOPNOTSUPP;
 		goto exit;
+	}
 
 	data = kzalloc(sizeof(struct ad7414_data), GFP_KERNEL);
 	if (!data) {
-- 
1.7.2



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