This is a note to let you know that I've just added the patch titled
mei: bus: block send with vtag on non-conformat FW
to my char-misc git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-testing branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will be merged to the char-misc-next branch sometime soon,
after it passes testing, and the merge window is open.
If you have any questions about this process, please let me know.
>From b398d53cd421454d64850f8b1f6d609ede9042d9 Mon Sep 17 00:00:00 2001
From: Alexander Usyskin <alexander.usyskin@xxxxxxxxx>
Date: Mon, 8 Feb 2021 17:06:48 +0200
Subject: mei: bus: block send with vtag on non-conformat FW
Block data send with vtag if either transport layer or
FW client are not supporting vtags.
Cc: <stable@xxxxxxxxxxxxxxx> # v5.10+
Signed-off-by: Alexander Usyskin <alexander.usyskin@xxxxxxxxx>
Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
Link: https://lore.kernel.org/r/20210208150649.141358-1-tomas.winkler@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/misc/mei/bus.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 580074e32599..935acc6bbf3c 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -61,6 +61,13 @@ ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length, u8 vtag,
goto out;
}
+ if (vtag) {
+ /* Check if vtag is supported by client */
+ rets = mei_cl_vt_support_check(cl);
+ if (rets)
+ goto out;
+ }
+
if (length > mei_cl_mtu(cl)) {
rets = -EFBIG;
goto out;
--
2.30.0
