Re: [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: Greg KH
Date: Tue Jan 03 2017 - 09:35:16 EST

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In reply to: Max Bires: "[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."
Next in thread: Max Bires: "[PATCH] char: lack of bool string made CONFIG_DEVPORT always on"
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On Tue, Jan 03, 2017 at 06:26:33AM -0800, Max Bires wrote:
> Signed-off-by: Max Bires <jbires@xxxxxxxxxx>
> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> drivers/char/Kconfig | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)

Odd subject line :(