linux-kernel - [char-misc-next] mei: pxp: fix mei_pxp_send

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <20231031143307.165612-1-tomas.winkler@intel.com>
Date:   Tue, 31 Oct 2023 16:33:07 +0200
From:   Tomas Winkler <tomas.winkler@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Alexander Usyskin <alexander.usyskin@...el.com>,
        Vitaly Lubart <vitaly.lubart@...el.com>,
        linux-kernel@...r.kernel.org,
        Tomas Winkler <tomas.winkler@...el.com>
Subject: [char-misc-next] mei: pxp: fix mei_pxp_send_message return value

From: Alexander Usyskin <alexander.usyskin@...el.com>

mei_pxp_send_message() should return zero on success and
cannot propagate number of bytes as returned by internally
called mei_cldev_send().

Fixes: ee5cb39348e6 ("mei: pxp: recover from recv fail under memory pressure")
Signed-off-by: Alexander Usyskin <alexander.usyskin@...el.com>
Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
---
 drivers/misc/mei/pxp/mei_pxp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/mei/pxp/mei_pxp.c b/drivers/misc/mei/pxp/mei_pxp.c
index f77d78fa50549e69f0a0873b..787c6a27a4be60f9322c6aad 100644
--- a/drivers/misc/mei/pxp/mei_pxp.c
+++ b/drivers/misc/mei/pxp/mei_pxp.c
@@ -84,9 +84,10 @@ mei_pxp_send_message(struct device *dev, const void *message, size_t size, unsig
 				byte = ret;
 			break;
 		}
+		return byte;
 	}
 
-	return byte;
+	return 0;
 }
 
 /**
-- 
2.41.0