linux-kernel - [PATCH v6 0/2] tty: serial: Add RS422 serial interface

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20231201071554.258607-1-crescentcy.hsieh@moxa.com>
Date:   Fri,  1 Dec 2023 15:15:52 +0800
From:   Crescent CY Hsieh <crescentcy.hsieh@...a.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        Crescent CY Hsieh <crescentcy.hsieh@...a.com>
Subject: [PATCH v6 0/2] tty: serial: Add RS422 serial interface

This patch series adds RS422 flag to switch the serial interface into
RS422 if supported by using "TIOCSRS485" ioctl command.

---
Changes from v5 to v6:
- Split patch into cleanup patch and new feature patch
- [PATCH v6 2/2]:
	- Add termination resistors support for RS422

Changes from v4 to v5:
- Revise commit message.
- Delete RS422 checks within uart_set_rs485_termination().

Changes from v3 to v4:
- Include 'linux/const.h' header in '/include/uapi/linux/serial.h'
- Replace BIT() with _BITUL() which defined in
  '/include/uapi/linux/const.h'

Changes from v2 to v3:
- Remove "SER_RS422_ENABLED" flag from legacy flags.
- Revise "SER_RS422_ENABLED" into "SER_RS485_MODE_RS422".
- Remove the code which checks the conflicts between SER_RS485_ENABLED
  and SER_RS422_ENABLED.
- Add return check in uart_set_rs485_termination().

Changes from v1 to v2:
- Revise the logic that checks whether RS422/RS485 are enabled
  simultaneously.

v5: https://lore.kernel.org/all/20231121095122.15948-1-crescentcy.hsieh@moxa.com/
v4: https://lore.kernel.org/all/20231113094136.52003-1-crescentcy.hsieh@moxa.com/
v3: https://lore.kernel.org/all/20231108060719.11775-1-crescentcy.hsieh@moxa.com/
v2: https://lore.kernel.org/all/20231101064404.45711-1-crescentcy.hsieh@moxa.com/
v1: https://lore.kernel.org/all/20231030053632.5109-1-crescentcy.hsieh@moxa.com/

Crescent CY Hsieh (2):
  tty: serial: Cleanup the bit shift with macro
  tty: serial: Add RS422 flag to struct serial_rs485

 drivers/tty/serial/serial_core.c |  6 ++++++
 include/uapi/linux/serial.h      | 19 +++++++++++--------
 2 files changed, 17 insertions(+), 8 deletions(-)

-- 
2.34.1