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iio: ti_am335x_adc: Fix: Use same step id at FIFOs both ends 

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>
Cc: stable@vger.kernel.org
This commit is contained in:
Jan Kardell 2014-11-06 22:18:00 +00:00 committed by Jonathan Cameron
parent 2a58b4f88e
commit baa3c65298
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/adc/ti_am335x_adc.c
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@ -374,7 +374,7 @@ static int tiadc_read_raw(struct iio_dev *indio_dev,
return -EAGAIN;
}
}
map_val = chan->channel + TOTAL_CHANNELS;
map_val = adc_dev->channel_step[chan->scan_index];
/*
* We check the complete FIFO. We programmed just one entry but in case