From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> This driver uses IIO triggered buffers so it needs to select them in Kconfig. on riscv-32bit: /opt/crosstool/gcc-13.2.0-nolibc/riscv32-linux/bin/riscv32-linux-ld: drivers/iio/imu/bno055/bno055.o: in function `.L367': bno055.c:(.text+0x2c96): undefined reference to `devm_iio_triggered_buffer_setup_ext' Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Closes: https://lore.kernel.org/linux-next/40566b4b-3950-81fe-ff14-871d8c447627@xxxxxxxxxxxxx/ Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Cc: Andrea Merello <andrea.merello@xxxxxx> --- drivers/iio/imu/bno055/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iio/imu/bno055/Kconfig b/drivers/iio/imu/bno055/Kconfig index fa79b1ac4f85..83e53acfbe88 100644 --- a/drivers/iio/imu/bno055/Kconfig +++ b/drivers/iio/imu/bno055/Kconfig @@ -2,6 +2,8 @@ config BOSCH_BNO055 tristate + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER config BOSCH_BNO055_SERIAL tristate "Bosch BNO055 attached via UART" -- 2.42.0