linux-kernel - [PATCH v2 0/3] Handle UART without interrupt on TEMT using em485

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Date:   Thu,  4 Feb 2021 11:11:55 -0500
From:   Eric Tremblay <etremblay@...tech-controls.com>
To:     gregkh@...uxfoundation.org
Cc:     jslaby@...e.com, andriy.shevchenko@...ux.intel.com,
        matwey.kornilov@...il.com, giulio.benetti@...ronovasrl.com,
        lukas@...ner.de, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        christoph.muellner@...obroma-systems.com, heiko@...ech.de,
        heiko.stuebner@...obroma-systems.com,
        Eric Tremblay <etremblay@...tech-controls.com>
Subject: [PATCH v2 0/3] Handle UART without interrupt on TEMT using em485

Thanks everyone for the comments. I apply most of the comments on version 1
but there is still a pending point with the Jiri comment about the safety of:
struct tty_struct *tty = p->port.state->port.tty;
I thought about adding a check with tty_port_initialized() before accessing
the pointer, but I saw some other places where that same pointer is accessed
without further protection, at least from what I see. 

Changes from v1 to v2:
- Use UART_CAP_NOTEMT instead of UART_CAP_TEMT
- Use some predefined macro to reduce magicness
- Reset active_timer in temt timer handler
- add uart_get_byte_size
- set UART_CAP_NOTEMT in uart_config for PORT_16550A_FSL64
- Improve commit messages
- Improve grammar and spelling
- Add Giulio and Heiko SoB to reflect previous work

Eric Tremblay (3):
  serial: 8250: Handle UART without interrupt on TEMT using em485
  serial: 8250: Add UART_CAP_NOTEMT on PORT_16550A_FSL64
  serial: 8250: add compatible for fsl,16550-FIFO64

 drivers/tty/serial/8250/8250.h      |  1 +
 drivers/tty/serial/8250/8250_of.c   |  2 +
 drivers/tty/serial/8250/8250_port.c | 68 ++++++++++++++++++++++++++++-
 drivers/tty/serial/serial_core.c    | 29 ++++++++----
 include/linux/serial_8250.h         |  2 +
 include/linux/serial_core.h         |  2 +
 6 files changed, 94 insertions(+), 10 deletions(-)

-- 
2.17.1