From: Jan Kardell Date: Thu, 6 Nov 2014 22:18:00 +0000 (+0000) Subject: iio: ti_am335x_adc: Fix: Use same step id at FIFOs both ends X-Git-Tag: v3.15.6~74 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e7af190b2becaea9e5b5f6b1321f5bbcb9eaf8f2;p=thirdparty%2Fkernel%2Fstable.git iio: ti_am335x_adc: Fix: Use same step id at FIFOs both ends commit baa3c65298c089a9014b4e523a14ec2885cca1bc 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 Tested-by: Zubair Lutfullah Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index a4db3026bec6f..d5dc4c6ce86ca 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