linux-kernel - [PATCH] Documentation: sysrq: Remove contradicting sentence on extra /proc/sysrq-trigger characters

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Message-ID: <20251008112409.33622-1-bagasdotme@gmail.com>
Date: Wed,  8 Oct 2025 18:24:09 +0700
From: Bagas Sanjaya <bagasdotme@...il.com>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Documentation <linux-doc@...r.kernel.org>,
	Linux Serial <linux-serial@...r.kernel.org>
Cc: Jonathan Corbet <corbet@....net>,
	Cengiz Can <cengiz@...nel.wtf>,
	Bagas Sanjaya <bagasdotme@...il.com>,
	Tomas Mudrunka <tomas.mudrunka@...il.com>,
	Jiri Slaby <jirislaby@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Anselm Schüler <mail@...elmschueler.com>
Subject: [PATCH] Documentation: sysrq: Remove contradicting sentence on extra /proc/sysrq-trigger characters

/proc/sysrq-trigger documentation states that only first character is
processed and the rest is ignored, yet it is not recommended to write
any extra characters to it. The latter statement is contradictive as
these characters are also ignored as implied by preceding sentence.

Remove it.

Link: https://lore.kernel.org/lkml/7ca05672-dc20-413f-a923-f77ce0a9d307@anselmschueler.com/
Signed-off-by: Bagas Sanjaya <bagasdotme@...il.com>
---
 Documentation/admin-guide/sysrq.rst | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/Documentation/admin-guide/sysrq.rst b/Documentation/admin-guide/sysrq.rst
index 9c7aa817adc72d..63ff415ce85d66 100644
--- a/Documentation/admin-guide/sysrq.rst
+++ b/Documentation/admin-guide/sysrq.rst
@@ -77,9 +77,7 @@ On other
 On all
 	Write a single character to /proc/sysrq-trigger.
 	Only the first character is processed, the rest of the string is
-	ignored. However, it is not recommended to write any extra characters
-	as the behavior is undefined and might change in the future versions.
-	E.g.::
+	ignored. E.g.::
 
 		echo t > /proc/sysrq-trigger
 

base-commit: c746c3b5169831d7fb032a1051d8b45592ae8d78
-- 
An old man doll... just what I always wanted! - Clara