linux-kernel - [char-misc-linus for v6.7-rc3 V2] mei: pxp: fix mei_pxp_send

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Message-ID: <20231126092449.88310-1-tomas.winkler@intel.com>
Date:   Sun, 26 Nov 2023 11:24:49 +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-linus for v6.7-rc3 V2] 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>
---
V2: This is a resent for https://lkml.org/lkml/2023/10/31/636
 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;
 }
 
 /**
-- 
2.43.0