After starting to use regmap API to access registers the edt-ft5x06 driver depends on symbols provided by REGMAP_I2C: edt-ft5x06.o: in function `edt_ft5x06_ts_probe': edt-ft5x06.c:1154: undefined reference to `__regmap_init_i2c' edt-ft5x06.o: in function `edt_ft5x06_ts_identify': edt-ft5x06.c:897: undefined reference to `__regmap_init_i2c' Make sure support for I2C regmap is actually selected by adding this dependency to Kconfig. Fixes: 9dfd9708ffba ("Input: edt-ft5x06 - convert to use regmap API") Signed-off-by: Daniel Golle <daniel@xxxxxxxxxxxxxx> --- drivers/input/touchscreen/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 1feecd7ed3cb5..143ff43c67ae3 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -768,6 +768,7 @@ config TOUCHSCREEN_PENMOUNT config TOUCHSCREEN_EDT_FT5X06 tristate "EDT FocalTech FT5x06 I2C Touchscreen support" depends on I2C + select REGMAP_I2C help Say Y here if you have an EDT "Polytouch" touchscreen based on the FocalTech FT5x06 family of controllers connected to -- 2.40.0