From: Petr Mladek <pmladek@suse.com>
To: John Ogness <john.ogness@linutronix.de>
Cc: "Sergey Senozhatsky" <senozhatsky@chromium.org>,
"Steven Rostedt" <rostedt@goodmis.org>,
"Marcos Paulo de Souza" <mpdesouza@suse.com>,
"Samuel Thibault" <samuel.thibault@ens-lyon.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Jiri Slaby" <jirislaby@kernel.org>,
"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
"Hugo Villeneuve" <hvilleneuve@dimonoff.com>,
"Fushuai Wang" <wangfushuai@baidu.com>,
"Kees Cook" <kees@kernel.org>,
"Stepan Ionichev" <sozdayvek@gmail.com>,
linux-serial@vger.kernel.org,
"Manuel Lauss" <manuel.lauss@gmail.com>,
linux-kernel@vger.kernel.org, "Petr Mladek" <pmladek@suse.com>
Subject: [PATCH v2 0/1] braille: nbcon: Fix Braille console for NBCON API
Date: Fri, 25 Sep 2026 16:17:28 +0200 [thread overview]
Message-ID: <20260925141729.173943-1-pmladek@suse.com> (raw)
Hi,
this is v2 patch which tries to fix Braille console driver to work
with uart 8250 serial console driver after is has been converted into
NBCON API.
Changes against v1:
+ Merged into one patch. It is hard to explain nbcon_braille*()
API without the user.
+ Reworked the locking, see the commit message for more details.
+ Fixed the check of CON_NBCON_ATOMIC_UNSAFE [Sashiko]
IMPORTANT: The solution is not safe in PREEMPT_RT. But it is better
then nothing. We could either solve it in v3. Or we could
fix it later.
[v1] https://lore.kernel.org/r/20260922072558.98854-1-pmladek@suse.com
Petr Mladek (1):
braille: nbcon: Allow to use a serial console with NBCON API as
Braille console
.../accessibility/braille/braille_console.c | 43 ++++++++++++-
drivers/tty/serial/8250/8250_port.c | 5 +-
include/linux/console.h | 8 +++
kernel/printk/nbcon.c | 64 +++++++++++++++++++
4 files changed, 117 insertions(+), 3 deletions(-)
--
2.55.0
next reply other threads:[~2026-09-25 14:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-25 14:17 Petr Mladek [this message]
2026-09-25 14:17 ` [PATCH v2 1/1] braille: nbcon: Allow to use a serial console with NBCON API as Braille console Petr Mladek
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