[PATCH 54/94] iio: ti_am335x_adc: Fix: Use same step id at FIFOs both ends

From: Sam Asadi
Date: Tue Jul 15 2014 - 13:04:00 EST

From: Jan Kardell <jan.kardell@xxxxxxxxxx>

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@xxxxxxxxxx>
Tested-by: Zubair Lutfullah <zubair.lutfullah@xxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: sam-the-6 <asadi.samuel@xxxxxxxxx>
drivers/iio/adc/ti_am335x_adc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index a4db302..d5dc4c6 100644
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c
@@ -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

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