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termios: consolidate values for VDISCARD in INIT_C_CC 

On old systems it used to be ^O.  Linux had never actually used
the value, but INIT_C_CC (on i386) did initialize it to ^O;
unfortunately, it had a typo in the comment claiming that to be
^U.  Most of the architectures copied the (correct) definition
along with mistaken comment.  alpha, powerpc and sparc tried
to make the definition match comment.

However, util-linux still resets it to ^O on any architecture,
^O is the historical value, kernel ignores it anyway and finally,
Linus said "Just change everybody to do the same, nobody cares
about VDISCARD".

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Link: https://lore.kernel.org/r/YxDmy//MKzs3ye7l@ZenIV
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Al Viro 2022-08-09 17:17:04 -04:00 committed by Greg Kroah-Hartman
parent c9874d3ffe
commit 38fc315a73
5 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/alpha/include/asm/termios.h
View File

@ -8,9 +8,9 @@
/* eof=^D eol=\0 eol2=\0 erase=del
werase=^W kill=^U reprint=^R sxtc=\0
intr=^C quit=^\ susp=^Z <OSF/1 VDSUSP>
start=^Q stop=^S lnext=^V discard=^U
start=^Q stop=^S lnext=^V discard=^O
vmin=\1 vtime=\0
*/
#define INIT_C_CC "\004\000\000\177\027\025\022\000\003\034\032\000\021\023\026\025\001\000"
#define INIT_C_CC "\004\000\000\177\027\025\022\000\003\034\032\000\021\023\026\017\001\000"
#endif /* _ALPHA_TERMIOS_H */

2
arch/mips/include/asm/termios.h
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@ -16,7 +16,7 @@
* intr=^C quit=^\ erase=del kill=^U
* vmin=\1 vtime=\0 eol2=\0 swtc=\0
* start=^Q stop=^S susp=^Z vdsusp=
* reprint=^R discard=^U werase=^W lnext=^V
* reprint=^R discard=^O werase=^W lnext=^V
* eof=^D eol=\0
*/
#define INIT_C_CC "\003\034\177\025\1\0\0\0\021\023\032\0\022\017\027\026\004\0"

4
arch/powerpc/include/asm/termios.h
View File

@ -10,7 +10,7 @@
#include <uapi/asm/termios.h>
/* ^C ^\ del ^U ^D 1 0 0 0 0 ^W ^R ^Z ^Q ^S ^V ^U */
#define INIT_C_CC "\003\034\177\025\004\001\000\000\000\000\027\022\032\021\023\026\025"
/* ^C ^\ del ^U ^D 1 0 0 0 0 ^W ^R ^Z ^Q ^S ^V ^O */
#define INIT_C_CC "\003\034\177\025\004\001\000\000\000\000\027\022\032\021\023\026\017"
#endif /* _ASM_POWERPC_TERMIOS_H */

4
arch/sparc/include/asm/termios.h
View File

@ -9,9 +9,9 @@
/* intr=^C quit=^\ erase=del kill=^U
eof=^D eol=\0 eol2=\0 sxtc=\0
start=^Q stop=^S susp=^Z dsusp=^Y
reprint=^R discard=^U werase=^W lnext=^V
reprint=^R discard=^O werase=^W lnext=^V
vmin=\1 vtime=\0
*/
#define INIT_C_CC "\003\034\177\025\004\000\000\000\021\023\032\031\022\025\027\026\001"
#define INIT_C_CC "\003\034\177\025\004\000\000\000\021\023\032\031\022\017\027\026\001"
#endif /* _SPARC_TERMIOS_H */

2
include/linux/termios_internal.h
View File

@ -9,7 +9,7 @@
/* intr=^C quit=^\ erase=del kill=^U
eof=^D vtime=\0 vmin=\1 sxtc=\0
start=^Q stop=^S susp=^Z eol=\0
reprint=^R discard=^U werase=^W lnext=^V
reprint=^R discard=^O werase=^W lnext=^V
eol2=\0
*/
#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"