[PATCH] Without a bool string present, using "# CONFIG_DEVPORT is not set" in defconfig files would not actually unset devport. This esnured that /dev/port was always on, but there are reasons a user may wish to disable it (smaller kernel, attack surface reduction) if it's not being used. Adding a message here in order to make this user visible.

From: Max Bires
Date: Tue Jan 03 2017 - 09:27:33 EST

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Signed-off-by: Max Bires <jbires@xxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/char/Kconfig | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index fde005e..4ee2a10 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -571,9 +571,12 @@ config TELCLOCK
controlling the behavior of this hardware.

config DEVPORT
- bool
+ bool "/dev/port character device"
depends on ISA || PCI
default y
+ help
+ Say Y here if you want to support the /dev/port device. The /dev/port
+ device is similar to /dev/mem, but for I/O ports.

source "drivers/s390/char/Kconfig"

--
2.8.0.rc3.226.g39d4020