linux-kernel - [PATCH] Input: pixcir_i2c_ts

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Date:	Tue, 16 Jun 2015 13:03:04 -0700
From:	Frodo Lai <frodo.lai@...il.com>
To:	dmitry.torokhov@...il.com
Cc:	rogerq@...com, rydberg@...math.org, jg1.han@...sung.com,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Input: pixcir_i2c_ts - fix receive error

The i2c_master_recv() uses readsize to receive data from i2c but
compares to size of rdbuf which is always 27. This would casue
problem when the max_fingers is not 5. Change the comparison value
to readsize instead.

Signed-off-by: Frodo Lai <frodo_lai@...com.com>
---
 drivers/input/touchscreen/pixcir_i2c_ts.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c
index 2c21071..8f3e243 100644
--- a/drivers/input/touchscreen/pixcir_i2c_ts.c
+++ b/drivers/input/touchscreen/pixcir_i2c_ts.c
@@ -78,7 +78,7 @@ static void pixcir_ts_parse(struct pixcir_i2c_ts_data *tsdata,
 	}
 
 	ret = i2c_master_recv(tsdata->client, rdbuf, readsize);
-	if (ret != sizeof(rdbuf)) {
+	if (ret != readsize) {
 		dev_err(&tsdata->client->dev,
 			"%s: i2c_master_recv failed(), ret=%d\n",
 			__func__, ret);
-- 
1.7.9.5

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