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Commit 8fc6fba4 authored by Max Bires's avatar Max Bires Committed by Mark Salyzyn
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UPSTREAM: char: lack of bool string made CONFIG_DEVPORT always on 



(cherry pick from commit f2cfa58b136e4b06a9b9db7af5ef62fbb5992f62)

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.

Signed-off-by: default avatarMax Bires <jbires@google.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Bug: 37210310
Bug: 36604779
Change-Id: Ib1e947526f6c6f7cdf6389923287631056f32c36
parent b68cf931

drivers/char/Kconfig

+4 −1
Original line number Diff line number Diff line
@@ -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"