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>,
Chris Down <chris@chrisdown.name>,
Naveen Kumar Chaudhary <naveen.osdev@gmail.com>,
linux-kernel@vger.kernel.org, Petr Mladek <pmladek@suse.com>
Subject: [PATCH v5 08/16] printk: Do not quietly ignore adding entry for a preferred console when there is no space
Date: Tue, 29 Sep 2026 14:05:38 +0200 [thread overview]
Message-ID: <20260929120546.328616-9-pmladek@suse.com> (raw)
In-Reply-To: <20260929120546.328616-1-pmladek@suse.com>
It is hard to imagine that anyone would want to add more than 8 preferred
consoles. But never say never. And do not ignore new entries quietly.
Signed-off-by: Petr Mladek <pmladek@suse.com>
---
kernel/printk/printk.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 0fafc579bdd3..4670787195d1 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2575,8 +2575,10 @@ static int add_or_update_preferred_console(unsigned int i,
struct preferred_console *pc;
bool is_new_entry = false;
- if (i >= MAX_PREFERRED_CONSOLES)
+ if (i >= MAX_PREFERRED_CONSOLES) {
+ pr_err_once("Reached maximal number of preferred consoles.\n");
return -E2BIG;
+ }
pc = &preferred_consoles[i];
--
2.55.0
next prev parent reply other threads:[~2026-09-29 12:07 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-29 12:05 [PATCH v5 00/16] printk: Clean up preferred console handling Petr Mladek
2026-09-29 12:05 ` [PATCH v5 01/16] printk: Rename struct console_cmdline to preferred_console Petr Mladek
2026-09-29 12:05 ` [PATCH v5 02/16] printk: Rename preferred_console to preferred_dev_console Petr Mladek
2026-09-29 12:05 ` [PATCH v5 03/16] printk: Cleanup _braille_(un)register_console() wrappers Petr Mladek
2026-09-29 12:05 ` [PATCH v5 04/16] printk: Separate code for adding/updating preferred console metadata Petr Mladek
2026-09-29 12:05 ` [PATCH v5 05/16] printk: Prefer the console either via name or devname exclusively Petr Mladek
2026-09-29 12:05 ` [PATCH v5 06/16] printk: Check that index is not defined when a console is preferred via devname Petr Mladek
2026-09-29 12:05 ` [PATCH v5 07/16] printk: Ensure consistent name and devname when updating preferred console Petr Mladek
2026-09-29 12:05 ` Petr Mladek [this message]
2026-09-29 12:05 ` [PATCH v5 09/16] printk: Allow to override options via the command line Petr Mladek
2026-09-29 12:05 ` [PATCH v5 10/16] printk: Allow to debug misuse of add_or_update_preferred_console() Petr Mladek
2026-09-29 12:05 ` [PATCH v5 11/16] console/braille: Lock console->setup() call during the registration Petr Mladek
2026-09-29 12:05 ` [PATCH v5 12/16] printk: Separate code for enabling console Petr Mladek
2026-09-29 12:05 ` [PATCH v5 13/16] printk: Try to register each console as Braille first Petr Mladek
2026-09-29 12:05 ` [PATCH v5 14/16] printk: Do not set Braille console as preferred_console Petr Mladek
2026-09-29 12:05 ` [PATCH v5 15/16] printk: Modify try_enable_default_console() to return error/success Petr Mladek
2026-09-29 12:05 ` [PATCH v5 16/16] printk: Try enable preferred consoles only when there are any Petr Mladek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260929120546.328616-9-pmladek@suse.com \
--to=pmladek@suse.com \
--cc=chris@chrisdown.name \
--cc=john.ogness@linutronix.de \
--cc=linux-kernel@vger.kernel.org \
--cc=mpdesouza@suse.com \
--cc=naveen.osdev@gmail.com \
--cc=rostedt@goodmis.org \
--cc=senozhatsky@chromium.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®