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| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2021-02-08 18:06:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-09 11:30:28 +0300 |
| commit | b398d53cd421454d64850f8b1f6d609ede9042d9 (patch) | |
| tree | fb8925510b66b2a9d7c362033af14e03c53cdb89 /drivers/misc/mei/bus.c | |
| parent | bf5c9cc8ad7fffd1f72df3baa5870449e4c16d1b (diff) | |
| download | linux-b398d53cd421454d64850f8b1f6d609ede9042d9.tar.xz | |
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@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>
Diffstat (limited to 'drivers/misc/mei/bus.c')
| -rw-r--r-- | drivers/misc/mei/bus.c | 7 |
1 files changed, 7 insertions, 0 deletions
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; |