From: Alexander Usyskin alexander.usyskin@intel.com
commit b398d53cd421454d64850f8b1f6d609ede9042d9 upstream.
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 Link: https://lore.kernel.org/r/20210208150649.141358-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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;