linux-kernel - [PATCH 3.19.y-ckt 008/156] HID: cp2112: fix byte order in SMBUS operations

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Message-Id: <1445377097-9921-9-git-send-email-kamal@canonical.com>
Date:	Tue, 20 Oct 2015 14:35:49 -0700
From:	Kamal Mostafa <kamal@...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>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 008/156] HID: cp2112: fix byte order in SMBUS operations

3.19.8-ckt8 -stable review patch.  If anyone has any objections, please let me know.

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

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

commit 29e2d6d1f6f61ba2b5cc9d9867e01d8c31a6c4f7 upstream.

Change all occurrences of be16 to le16 in cp2112_xfer(),
because SMBUS words are little endian, not big endian.

Signed-off-by: Ellen Wang <ellen@...ulusnetworks.com>
Signed-off-by: Jiri Kosina <jkosina@...e.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/hid/hid-cp2112.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index 55fd146..39bf747 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -537,7 +537,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 	struct cp2112_device *dev = (struct cp2112_device *)adap->algo_data;
 	struct hid_device *hdev = dev->hdev;
 	u8 buf[64];
-	__be16 word;
+	__le16 word;
 	ssize_t count;
 	size_t read_length = 0;
 	unsigned int retries;
@@ -569,7 +569,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 		break;
 	case I2C_SMBUS_WORD_DATA:
 		read_length = 2;
-		word = cpu_to_be16(data->word);
+		word = cpu_to_le16(data->word);
 
 		if (I2C_SMBUS_READ == read_write)
 			count = cp2112_write_read_req(buf, addr, read_length,
@@ -582,7 +582,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 		size = I2C_SMBUS_WORD_DATA;
 		read_write = I2C_SMBUS_READ;
 		read_length = 2;
-		word = cpu_to_be16(data->word);
+		word = cpu_to_le16(data->word);
 
 		count = cp2112_write_read_req(buf, addr, read_length, command,
 					      (u8 *)&word, 2);
@@ -675,7 +675,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 		data->byte = buf[0];
 		break;
 	case I2C_SMBUS_WORD_DATA:
-		data->word = be16_to_cpup((__be16 *)buf);
+		data->word = le16_to_cpup((__le16 *)buf);
 		break;
 	case I2C_SMBUS_BLOCK_DATA:
 		if (read_length > I2C_SMBUS_BLOCK_MAX) {
-- 
1.9.1

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