From: William Breathitt Gray <vilhelm.gray@gmail.com>
To: Jonathan Cameron <jic23@kernel.org>,
Hartmut Knaack <knaack.h@gmx.de>,
Lars-Peter Clausen <lars@metafoo.de>,
Peter Meerwald-Stadler <pmeerw@pmeerw.net>
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
Date: Thu, 9 Feb 2017 10:03:41 -0500 [thread overview]
Message-ID: <20170209150341.GA29292@sophia> (raw)
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 <vilhelm.gray@gmail.com>
---
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
next reply other threads:[~2017-02-09 15:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-09 15:03 William Breathitt Gray [this message]
2017-02-11 9:37 ` [PATCH] iio: 104-quad-8: Fix off-by-one error when addressing flag register Jonathan Cameron
2017-03-13 13:33 ` William Breathitt Gray
2017-03-13 21:33 ` Jonathan Cameron
2017-03-14 15:00 ` William Breathitt Gray
2017-03-15 5:33 ` Greg KH
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