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 the 5.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mei-bus-block-send-with-vtag-on-non-conformat-fw.patch and it can be found in the queue-5.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >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 From: Alexander Usyskin <alexander.usyskin@xxxxxxxxx> commit b398d53cd421454d64850f8b1f6d609ede9042d9 upstream. 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(+) --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -60,6 +60,13 @@ ssize_t __mei_cl_send(struct mei_cl *cl, 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; Patches currently in stable-queue which might be from alexander.usyskin@xxxxxxxxx are queue-5.11/mei-me-add-adler-lake-point-s-did.patch queue-5.11/mei-me-add-adler-lake-point-lp-did.patch queue-5.11/watchdog-mei_wdt-request-stop-on-unregister.patch queue-5.11/mei-fix-transfer-over-dma-with-extended-header.patch queue-5.11/mei-bus-block-send-with-vtag-on-non-conformat-fw.patch queue-5.11/mei-hbm-call-mei_set_devstate-on-hbm-stop-response.patch