From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932520AbcBXFBD (ORCPT ); Wed, 24 Feb 2016 00:01:03 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:52068 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757146AbcBXEEY (ORCPT ); Tue, 23 Feb 2016 23:04:24 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Michael Hennerich , Lars-Peter Clausen , Jonathan Cameron Subject: [PATCH 3.14 34/70] iio:ad5064: Make sure ad5064_i2c_write() returns 0 on success Date: Tue, 23 Feb 2016 19:33:43 -0800 Message-Id: <20160224033355.201915063@linuxfoundation.org> X-Mailer: git-send-email 2.7.1 In-Reply-To: <20160224033354.061464831@linuxfoundation.org> References: <20160224033354.061464831@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Michael Hennerich commit 03fe472ef33b7f31fbd11d300dbb3fdab9c00fd4 upstream. i2c_master_send() returns the number of bytes transferred on success while the ad5064 driver expects that the write() callback returns 0 on success. Fix that by translating any non negative return value of i2c_master_send() to 0. Fixes: commit 6a17a0768f77 ("iio:dac:ad5064: Add support for the ad5629r and ad5669r") Signed-off-by: Michael Hennerich Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/iio/dac/ad5064.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/drivers/iio/dac/ad5064.c +++ b/drivers/iio/dac/ad5064.c @@ -598,10 +598,16 @@ static int ad5064_i2c_write(struct ad506 unsigned int addr, unsigned int val) { struct i2c_client *i2c = to_i2c_client(st->dev); + int ret; st->data.i2c[0] = (cmd << 4) | addr; put_unaligned_be16(val, &st->data.i2c[1]); - return i2c_master_send(i2c, st->data.i2c, 3); + + ret = i2c_master_send(i2c, st->data.i2c, 3); + if (ret < 0) + return ret; + + return 0; } static int ad5064_i2c_probe(struct i2c_client *i2c,