From: Tomas Winkler <tomas.winkler@intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alexander Usyskin <alexander.usyskin@intel.com>,
linux-kernel@vger.kernel.org, stable@vger.kernel.org,
Tomas Winkler <tomas.winkler@intel.com>
Subject: [char-misc-next 1/2] mei: bus: block send with vtag on non-conformat FW
Date: Mon, 8 Feb 2021 17:06:48 +0200 [thread overview]
Message-ID: <20210208150649.141358-1-tomas.winkler@intel.com> (raw)
From: Alexander Usyskin <alexander.usyskin@intel.com>
Block data send with vtag if either transport layer or
FW client are not supporting vtags.
Cc: <stable@vger.kernel.org> # v5.10+
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
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 34fb5e541fe5..be99bb0a16cf 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;
--
2.26.2
next reply other threads:[~2021-02-08 15:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-08 15:06 Tomas Winkler [this message]
2021-02-08 15:06 ` [char-misc-next 2/2] mei: use sysfs_emit() in tx_queue_limit_show sysfs Tomas Winkler
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