diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2014-10-16 16:54:22 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-05 18:53:54 -0800 |
| commit | 352f86187e1d3e9e27d3be237103dc83a48f882c (patch) | |
| tree | f5520a81db4238fdc4852f4b411ca78431d1118a /include/uapi/linux/tty_flags.h | |
| parent | 904326ecac022ebaeb39cdfb206fd3b6551cdfca (diff) | |
tty: Document defunct ASYNC_* bits in uapi header
Note the serial_struct flags for which the kernel ignores and performs
no action. The flags cannot be removed since they form part of the
userspace interface via the TIOCSSERIAL/TIOCGSERIAL ioctls.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/tty_flags.h')
| -rw-r--r-- | include/uapi/linux/tty_flags.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/uapi/linux/tty_flags.h b/include/uapi/linux/tty_flags.h index 7b516f7ee7e6..4e021e31c219 100644 --- a/include/uapi/linux/tty_flags.h +++ b/include/uapi/linux/tty_flags.h @@ -8,6 +8,7 @@ * Define ASYNCB_* for convenient use with {test,set,clear}_bit. * * Bits [0..ASYNCB_LAST_USER] are userspace defined/visible/changeable + * [x] in the bit comments indicates the flag is defunct and no longer used. */ #define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes * on the callout port */ @@ -19,15 +20,15 @@ #define ASYNCB_SKIP_TEST 6 /* Skip UART test during autoconfiguration */ #define ASYNCB_AUTO_IRQ 7 /* Do automatic IRQ during * autoconfiguration */ -#define ASYNCB_SESSION_LOCKOUT 8 /* Lock out cua opens based on session */ -#define ASYNCB_PGRP_LOCKOUT 9 /* Lock out cua opens based on pgrp */ -#define ASYNCB_CALLOUT_NOHUP 10 /* Don't do hangups for cua device */ +#define ASYNCB_SESSION_LOCKOUT 8 /* [x] Lock out cua opens based on session */ +#define ASYNCB_PGRP_LOCKOUT 9 /* [x] Lock out cua opens based on pgrp */ +#define ASYNCB_CALLOUT_NOHUP 10 /* [x] Don't do hangups for cua device */ #define ASYNCB_HARDPPS_CD 11 /* Call hardpps when CD goes high */ #define ASYNCB_SPD_SHI 12 /* Use 230400 instead of 38400 bps */ #define ASYNCB_LOW_LATENCY 13 /* Request low latency behaviour */ #define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety * checks. Note: can be dangerous! */ -#define ASYNCB_AUTOPROBE 15 /* Port was autoprobed by PCI or PNP code */ +#define ASYNCB_AUTOPROBE 15 /* [x] Port was autoprobed by PCI/PNP code */ #define ASYNCB_MAGIC_MULTIPLIER 16 /* Use special CLK or divisor */ #define ASYNCB_LAST_USER 16 |