From: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx> [ Upstream commit cb7a374a5e7a5af3f8c839f74439193add6d0589 ] MAX77650 MFD driver uses regmap_irq API but doesn't select the required REGMAP_IRQ option in Kconfig. This can cause the following build error if regmap irq is not enabled implicitly by someone else: ld: drivers/mfd/max77650.o: in function `max77650_i2c_probe': max77650.c:(.text+0xcb): undefined reference to `devm_regmap_add_irq_chip' ld: max77650.c:(.text+0xdb): undefined reference to `regmap_irq_get_domain' make: *** [Makefile:1079: vmlinux] Error 1 Fix it by adding the missing option. Fixes: d0f60334500b ("mfd: Add new driver for MAX77650 PMIC") Reported-by: Paul Gazzillo <paul@xxxxxxxxx> Signed-off-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/mfd/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index ae24d3ea68ea4..43169f25da1fd 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -758,6 +758,7 @@ config MFD_MAX77650 depends on OF || COMPILE_TEST select MFD_CORE select REGMAP_I2C + select REGMAP_IRQ help Say Y here to add support for Maxim Semiconductor MAX77650 and MAX77651 Power Management ICs. This is the core multifunction -- 2.20.1