linux-kernel - [PATCH 2/5] i3c: add actual in i3c_priv

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: <20231016154632.2851957-3-Frank.Li@nxp.com>
Date:   Mon, 16 Oct 2023 11:46:29 -0400
From:   Frank Li <Frank.Li@....com>
To:     alexandre.belloni@...tlin.com, miquel.raynal@...tlin.com,
        conor.culhane@...vaco.com, joe@...ches.com,
        linux-i3c@...ts.infradead.org, linux-kernel@...r.kernel.org,
        imx@...ts.linux.dev
Subject: [PATCH 2/5] i3c: add actual in i3c_priv_xfer

In MIPI I3C Specification:

"Ninth Bit of SDR Target Returned (Read) Data as End-of-Data: In I2C, the
ninth Data bit from Target to Controller is an ACK by the Controller. By
contrast, in I3C this bit allows the Target to end a Read, and allows the
Controller to Abort a Read. In SDR terms, the ninth bit of Read data is
referred to as the T-Bit (for ‘Transition’)"

I3C allow devices early terminate data transfer. So need "actual" field to
indicate how much get by i3c_priv_xfer.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 include/linux/i3c/device.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/i3c/device.h b/include/linux/i3c/device.h
index 90fa83464f00..f2fa7ee5d96d 100644
--- a/include/linux/i3c/device.h
+++ b/include/linux/i3c/device.h
@@ -66,6 +66,7 @@ struct i3c_priv_xfer {
 		void *in;
 		const void *out;
 	} data;
+	u16 actual;
 	enum i3c_error_code err;
 };

-- 
2.34.1