Use the IS_ENABLED() helper macro to ensure that the configfs group is initialized either when configfs is built-in or when configfs is built as a module. Otherwise software device creation will result in undefined behaviour when configfs is built as a module since the configfs group for the device not properly initialized. Similar to commitb2f0c09664("iio: sw-trigger: Fix config group initialization"). Fixes:0f3a8c3f34("iio: Add support for creating IIO devices via configfs") Reported-by: Miguel Robles <miguel.robles@farole.net> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Daniel Baluta <daniel.baluta@gmail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>