[lkml]   [2017]   [Apr]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH 3.18 013/124] char: lack of bool string made CONFIG_DEVPORT always on
3.18-stable review patch.  If anyone has any objections, please let me know.


From: Max Bires <>

commit f2cfa58b136e4b06a9b9db7af5ef62fbb5992f62 upstream.

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: Max Bires <>
Acked-by: Arnd Bergmann <>
Signed-off-by: Greg Kroah-Hartman <>

drivers/char/Kconfig | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -574,9 +574,12 @@ 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"

 \ /
  Last update: 2017-04-20 09:08    [W:0.326 / U:0.836 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site