iio: ad_sigma_delta: select channel when reading register

The desired channel has to be selected in order to correctly fill the
buffer with the corresponding data.
The `ad_sd_write_reg()` already does this, but for the
`ad_sd_read_reg_raw()` this was omitted.

Fixes: af3008485ea03 ("iio:adc: Add common code for ADI Sigma Delta devices")
Signed-off-by: Dragos Bogdan <[email protected]>
Signed-off-by: Alexandru Ardelean <[email protected]>
Cc: <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>

diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
index ff5f2da2e1b134d369fbc6ce7180a9ebf0de4ec1..54d9978b274055da963ed282b6b94c0b4245fed5 100644 (file)
--- a/drivers/iio/adc/ad_sigma_delta.c
+++ b/drivers/iio/adc/ad_sigma_delta.c
@@ -121,6 +121,7 @@ static int ad_sd_read_reg_raw(struct ad_sigma_delta *sigma_delta,
        if (sigma_delta->info->has_registers) {
                data[0] = reg << sigma_delta->info->addr_shift;
                data[0] |= sigma_delta->info->read_mask;
+               data[0] |= sigma_delta->comm;
                spi_message_add_tail(&t[0], &m);
        }
        spi_message_add_tail(&t[1], &m);