linux-kernel - [PATCH v3 19/28] docs: i2c: smbus-protocol: improve I2C Block transactions description

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200129151953.31582-20-luca@lucaceresoli.net>
Date:   Wed, 29 Jan 2020 16:19:44 +0100
From:   Luca Ceresoli <luca@...aceresoli.net>
To:     linux-i2c@...r.kernel.org, linux-doc@...r.kernel.org
Cc:     Luca Ceresoli <luca@...aceresoli.net>,
        Wolfram Sang <wsa@...-dreams.de>,
        Jean Delvare <jdelvare@...e.de>, Peter Rosin <peda@...ntia.se>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v3 19/28] docs: i2c: smbus-protocol: improve I2C Block transactions description


Clarify from the beginning what these transactions are, and specifically
how they differ from the SMBus counterparts, i.e. the lack of a Count byte.

Signed-off-by: Luca Ceresoli <luca@...aceresoli.net>
Reviewed-by: Jean Delvare <jdelvare@...e.de>
---
 Documentation/i2c/smbus-protocol.rst | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Documentation/i2c/smbus-protocol.rst b/Documentation/i2c/smbus-protocol.rst
index 7350e4b2c2fa..0edaf6069ac1 100644
--- a/Documentation/i2c/smbus-protocol.rst
+++ b/Documentation/i2c/smbus-protocol.rst
@@ -282,9 +282,10 @@ This is implemented the following way in the Linux kernel:
 I2C Block Transactions
 ======================
 
-The following I2C block transactions are supported by the
-SMBus layer and are described here for completeness.
-They are *NOT* defined by the SMBus specification.
+The following I2C block transactions are similar to the SMBus Block Read
+and Write operations, except these do not have a Count byte. They are
+supported by the SMBus layer and are described here for completeness, but
+they are *NOT* defined by the SMBus specification.
 
 I2C block transactions do not limit the number of bytes transferred
 but the SMBus layer places a limit of 32 bytes.
-- 
2.25.0