linux-kernel - [PATCH 4.18 126/228] iio: 104-quad-8: Fix off-by-one error in register selection

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Date:   Tue,  2 Oct 2018 06:23:43 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        William Breathitt Gray <vilhelm.gray@...il.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.18 126/228] iio: 104-quad-8: Fix off-by-one error in register selection

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

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

From: William Breathitt Gray <vilhelm.gray@...il.com>

[ Upstream commit 2873c3f0e2bd12a7612e905c920c058855f4072a ]

The reset flags operation is selected by bit 2 in the "Reset and Load
Signals Decoders" register, not bit 1.

Fixes: 28e5d3bb0325 ("iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8")
Signed-off-by: William Breathitt Gray <vilhelm.gray@...il.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/iio/counter/104-quad-8.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/counter/104-quad-8.c
+++ b/drivers/iio/counter/104-quad-8.c
@@ -138,7 +138,7 @@ static int quad8_write_raw(struct iio_de
 			outb(val >> (8 * i), base_offset);
 
 		/* Reset Borrow, Carry, Compare, and Sign flags */
-		outb(0x02, base_offset + 1);
+		outb(0x04, base_offset + 1);
 		/* Reset Error flag */
 		outb(0x06, base_offset + 1);