linux-kernel - [PATCH 3.16.y-ckt 005/133] HID: cp2112: fix I2C_SMBUS

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Message-Id: <1443606681-7124-6-git-send-email-luis.henriques@canonical.com>
Date:	Wed, 30 Sep 2015 10:49:13 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Ellen Wang <ellen@...ulusnetworks.com>,
	Jiri Kosina <jkosina@...e.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 005/133] HID: cp2112: fix I2C_SMBUS_BYTE write

3.16.7-ckt18 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ellen Wang <ellen@...ulusnetworks.com>

commit 6d00d153f00097d259f86304e11858a50a1b8ad1 upstream.

When doing an I2C_SMBUS_BYTE write (one byte write, no address),
the data to be written is in "command" not "data->byte".

Signed-off-by: Ellen Wang <ellen@...ulusnetworks.com>
Acked-by: Wolfram Sang <wsa@...-dreams.de>
Reviewed-by: Antonio Borneo <borneo.antonio@...il.com>
Signed-off-by: Jiri Kosina <jkosina@...e.com>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/hid/hid-cp2112.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index ffe69be882de..68d6d93cbec9 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -451,7 +451,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 		if (I2C_SMBUS_READ == read_write)
 			count = cp2112_read_req(buf, addr, read_length);
 		else
-			count = cp2112_write_req(buf, addr, data->byte, NULL,
+			count = cp2112_write_req(buf, addr, command, NULL,
 						 0);
 		break;
 	case I2C_SMBUS_BYTE_DATA:
--
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