iio: adc: dln2-adc: fix build error

The dln2-adc driver uses interface(s) that are controlled by the
IIO_TRIGGERED_BUFFER Kconfig symbol, so the driver needs to select
that symbol to prevent the build error.

drivers/iio/adc/dln2-adc.o: In function `dln2_adc_probe':
dln2-adc.c:(.text+0x528): undefined reference to `devm_iio_triggered_buffer_setup'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org
Cc: Jack Andersen <jackoalan@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 57625653fcb6..1d13bf03c758 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -243,6 +243,8 @@ config DA9150_GPADC
 config DLN2_ADC
         tristate "Diolan DLN-2 ADC driver support"
         depends on MFD_DLN2
+        select IIO_BUFFER
+        select IIO_TRIGGERED_BUFFER
         help
           Say yes here to build support for Diolan DLN-2 ADC.