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    Subject[PATCH 4.9 20/44] iio: ad_sigma_delta: select channel when reading register
    Date
    From: Dragos Bogdan <dragos.bogdan@analog.com>

    commit fccfb9ce70ed4ea7a145f77b86de62e38178517f upstream.

    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 <dragos.bogdan@analog.com>
    Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
    Cc: <Stable@vger.kernel.org>
    Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/iio/adc/ad_sigma_delta.c | 1 +
    1 file changed, 1 insertion(+)

    --- 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_
    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);

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