linux-kernel - [PATCH v2] Input: cy8ctmg110_ts - fix checking return value of i2c_master

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Message-ID: <1310460193.2028.1.camel@phoenix>
Date:	Tue, 12 Jul 2011 16:43:13 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Samuli Konttila <samuli.konttila@...amobile.com>,
	linux-input@...r.kernel.org
Subject: [PATCH v2] Input: cy8ctmg110_ts - fix checking return value of
 i2c_master_send

i2c_master_send returns negative errno, or else the number of bytes written.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/input/touchscreen/cy8ctmg110_ts.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/touchscreen/cy8ctmg110_ts.c b/drivers/input/touchscreen/cy8ctmg110_ts.c
index 4481cc5..d7afa20 100644
--- a/drivers/input/touchscreen/cy8ctmg110_ts.c
+++ b/drivers/input/touchscreen/cy8ctmg110_ts.c
@@ -84,9 +84,9 @@ static int cy8ctmg110_write_regs(struct cy8ctmg110 *tsc, unsigned char reg,
 	memcpy(i2c_data + 1, value, len);
 
 	ret = i2c_master_send(client, i2c_data, len + 1);
-	if (ret != 1) {
+	if (ret != (len + 1)) {
 		dev_err(&client->dev, "i2c write data cmd failed\n");
-		return ret ? ret : -EIO;
+		return ret < 0 ? ret : -EIO;
 	}
 
 	return 0;
-- 
1.7.4.1



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