From: Tate Whiteberg <whiteberg@arista.com>
To: Andy Shevchenko <andriy.shevchenko@intel.com>,
Jiri Slaby <jirislaby@kernel.org>
Cc: Tate Whiteberg <whiteberg@arista.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andy Shevchenko <andy@kernel.org>,
linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org
Subject: [PATCH v3 0/2] serial: 8250_mid: fix race condition between output flush and termios update
Date: Mon, 31 Aug 2026 16:59:06 +0000 [thread overview]
Message-ID: <20260831165911.2029839-1-whiteberg@arista.com> (raw)
Fix a race condition in which setting termios while still transmitting
can corrupt transmission.
Changes in v3:
1. Patch 2: use scoped_guard(), as suggested by jirislaby@kernel.org
2. Patch 2: Update Fixes tag, formatting changes as suggested by
andriy.shevchenko@intel.com
Changes in v2:
Split original patch into two: a prerequisite to to expose
wait_for_xmitr() and a successor to fix the bug.
Tate Whiteberg (2):
serial: 8250: export and rename wait_for_xmitr()
serial: 8250_mid: wait for LSR tx empty before setting termios
drivers/tty/serial/8250/8250.h | 1 +
drivers/tty/serial/8250/8250_mid.c | 15 +++++++++++----
drivers/tty/serial/8250/8250_port.c | 13 +++++++------
3 files changed, 19 insertions(+), 10 deletions(-)
--
2.43.0
next reply other threads:[~2026-08-31 16:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-31 16:59 Tate Whiteberg [this message]
2026-08-31 16:59 ` [PATCH v3 1/2] serial: 8250: export and rename wait_for_xmitr() Tate Whiteberg
2026-08-31 19:23 ` sashiko-bot
2026-08-31 16:59 ` [PATCH v3 2/2] serial: 8250_mid: wait for LSR tx empty before setting termios Tate Whiteberg
2026-08-31 19:35 ` sashiko-bot
2026-09-01 9:04 ` Andy Shevchenko
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