gpio: raspberrypi-exp: explain Kconfig dependency
authorBaruch Siach <baruch@tkos.co.il>
Fri, 2 Mar 2018 09:47:01 +0000 (11:47 +0200)
committerLinus Walleij <linus.walleij@linaro.org>
Fri, 2 Mar 2018 12:00:30 +0000 (13:00 +0100)
commit94337b72618eacc1756eba4765a15b3748f80fbc
tree6b342126287df1281aa7f7c5eda4182e0e9e1cc2
parent9a3821c2bb47d2582b0c8f053d4c3bed7bd8d3d1
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 <arnd@arndb.de>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
drivers/gpio/Kconfig