'default n' is the default value for any bool or tristate Kconfig setting so there is no need to write it explicitly.
Also since commit f467c5640c29 ("kconfig: only write '# CONFIG_FOO is not set' for visible symbols") the Kconfig behavior is the same regardless of 'default n' being present or not: ... One side effect of (and the main motivation for) this change is making the following two definitions behave exactly the same: config FOO bool config FOO bool default n With this change, neither of these will generate a '# CONFIG_FOO is not set' line (assuming FOO isn't selected/implied). That might make it clearer to people that a bare 'default n' is redundant. ... Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnier...@samsung.com> --- drivers/mfd/Kconfig | 6 ------ 1 file changed, 6 deletions(-) Index: b/drivers/mfd/Kconfig =================================================================== --- a/drivers/mfd/Kconfig 2018-10-09 15:58:40.547122978 +0200 +++ b/drivers/mfd/Kconfig 2018-10-10 16:49:37.575915230 +0200 @@ -8,7 +8,6 @@ menu "Multifunction device drivers" config MFD_CORE tristate select IRQ_DOMAIN - default n config MFD_CS5535 tristate "AMD CS5535 and CS5536 southbridge core functions" @@ -870,7 +869,6 @@ config MFD_VIPERBOARD tristate "Nano River Technologies Viperboard" select MFD_CORE depends on USB - default n help Say yes here if you want support for Nano River Technologies Viperboard. @@ -1575,7 +1573,6 @@ config MFD_TWL4030_AUDIO bool "TI TWL4030 Audio" depends on TWL4030_CORE select MFD_CORE - default n config TWL6040_CORE bool "TI TWL6040 audio codec" @@ -1583,7 +1580,6 @@ config TWL6040_CORE select MFD_CORE select REGMAP_I2C select REGMAP_IRQ - default n help Say yes here if you want support for Texas Instruments TWL6040 audio codec. @@ -1605,7 +1601,6 @@ config MFD_WL1273_CORE tristate "TI WL1273 FM radio" depends on I2C select MFD_CORE - default n help This is the core driver for the TI WL1273 FM radio. This MFD driver connects the radio-wl1273 V4L2 module and the wl1273 @@ -1649,7 +1644,6 @@ config MFD_TC3589X config MFD_TMIO bool - default n config MFD_T7L66XB bool "Toshiba T7L66XB"