Commit 00c77bcf authored Sep 22, 2023 by Wolfram Sang Committed by Greg Kroah-Hartman Oct 03, 2023

serial: core: add comment about definitely used port types

When port type 18 was removed, it was deduced that the code could go but
its define has to stay because it is used in userspace. Share that
knowledge by adding a comment about it.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20230922063642.4120-3-wsa+renesas@sang-engineering.com

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent b02d0061

include/uapi/linux/serial_core.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -11,6 +11,8 @@
		* The type definitions. These are from Ted Ts'o's serial.h
		* By historical reasons the values from 0 to 13 are defined
		* in the include/uapi/linux/serial.h, do not define them here.
		* Values 0 to 19 are used by setserial from busybox and must never
		* be modified.
		*/
		#define PORT_NS16550A 14
		#define PORT_XSCALE 15