iio: chemical: pms7003: fix unmet triggered buffer dependency

IIO triggered buffer depends on IIO buffer which is missing from Kconfig
file. This should go unnoticed most of the time because there's a
chance something else has already enabled buffers. In some rare cases
though one might experience kbuild warnings about unmet direct
dependencies and build failures due to missing symbols.

Fix this by selecting IIO_BUFFER explicitly.

Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Fixes: 27c2023ab29b ("iio: chemical: add support for Plantower PMS7003 sensor")
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/chemical/Kconfig b/drivers/iio/chemical/Kconfig
index fa4586037bb8ebcfaf0d978619e5d2475bbf85f1..0b91de4df8f4609daf0ad14d80db9f3665d38d34 100644 (file)
--- a/drivers/iio/chemical/Kconfig
+++ b/drivers/iio/chemical/Kconfig
@@ -65,6 +65,7 @@ config IAQCORE
 config PMS7003
        tristate "Plantower PMS7003 particulate matter sensor"
        depends on SERIAL_DEV_BUS
+       select IIO_BUFFER
        select IIO_TRIGGERED_BUFFER
        help
          Say Y here to build support for the Plantower PMS7003 particulate