From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yw0-f194.google.com ([209.85.161.194]:36806 "EHLO mail-yw0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752348AbdBIPEf (ORCPT ); Thu, 9 Feb 2017 10:04:35 -0500 Date: Thu, 9 Feb 2017 10:03:41 -0500 From: William Breathitt Gray To: Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] iio: 104-quad-8: Fix off-by-one error when addressing flag register Message-ID: <20170209150341.GA29292@sophia> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org The flag register is offset by 1 from the respective channel data register. This patch fixes an off-by-one error when attempting to read a channel flag register where the base address was not properly offset. Fixes: 28e5d3bb0325 ("iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8") Signed-off-by: William Breathitt Gray --- drivers/iio/counter/104-quad-8.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/counter/104-quad-8.c b/drivers/iio/counter/104-quad-8.c index a5913e97945e..f9b8fc9ae13f 100644 --- a/drivers/iio/counter/104-quad-8.c +++ b/drivers/iio/counter/104-quad-8.c @@ -76,7 +76,7 @@ static int quad8_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; } - flags = inb(base_offset); + flags = inb(base_offset + 1); borrow = flags & BIT(0); carry = !!(flags & BIT(1)); -- 2.11.1