From 94337b72618eacc1756eba4765a15b3748f80fbc Mon Sep 17 00:00:00 2001 From: Baruch Siach Date: Fri, 2 Mar 2018 11:47:01 +0200 Subject: gpio: raspberrypi-exp: explain Kconfig dependency Commit 7ed915059c3001 (gpio: raspberrypi-ext: fix firmware dependency) fixed the Kconfig dependency to ensure that gpio-raspberrypi-exp is not built-in when the firmware is a module. But the Kconfig syntax for doing so is cryptic. Add a comment to make it a little easier. Cc: Arnd Bergmann Signed-off-by: Baruch Siach Signed-off-by: Linus Walleij --- drivers/gpio/Kconfig | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpio/Kconfig') diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index f298a18b1f69..6b1ee11295d5 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -126,6 +126,8 @@ config GPIO_RASPBERRYPI_EXP tristate "Raspberry Pi 3 GPIO Expander" default RASPBERRYPI_FIRMWARE depends on OF_GPIO + # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only + # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE. depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE) help Turn on GPIO support for the expander on Raspberry Pi 3 boards, using -- cgit v1.2.3-59-g8ed1b