iio: ti_am335x_adc: Fix: Use same step id at FIFOs both ends
commit baa3c65298
upstream.
Since AI lines could be selected at will (linux-3.11) the sending
and receiving ends of the FIFO does not agree about what step is used
for a line. It only works if the last lines are used, like 5,6,7,
and fails if ie 2,4,6 is selected in DT.
Signed-off-by: Jan Kardell <jan.kardell@telliq.com>
Tested-by: Zubair Lutfullah <zubair.lutfullah@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parent
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@ -375,7 +375,7 @@ static int tiadc_read_raw(struct iio_dev *indio_dev,
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return -EAGAIN;
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}
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}
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map_val = chan->channel + TOTAL_CHANNELS;
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map_val = adc_dev->channel_step[chan->scan_index];
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/*
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* We check the complete FIFO. We programmed just one entry but in case
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