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iio: 104-quad-8: Fix off-by-one error when addressing flag register

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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: 28e5d3bb03 ("iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8")
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
William Breathitt Gray 2017-02-09 10:03:41 -05:00 committed by Jonathan Cameron
parent 17fa2dcbd6
commit ca8d8e03b4
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/counter/104-quad-8.c
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@ -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));