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author | Alexander Usyskin <alexander.usyskin@intel.com> | 2017-10-07 22:36:56 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-08 09:08:36 (GMT) |
commit | 0b5cdee7df7645b842ef10bebe35b16bd69ab953 (patch) | |
tree | 98c03845c5ce6d76de8b8ea286416088eb391093 | |
parent | ad1267a0c9f7ba7f8a134ef0c9e4110b4778c0dc (diff) | |
download | linux-0b5cdee7df7645b842ef10bebe35b16bd69ab953.tar.xz |
mei: return error on notification request to a disconnected client
[ Upstream commit 7c47d2ca0feca767479329da23523ed798acb854 ]
Request for a notification from a disconnected client will be ignored
silently by the FW but the caller should know that the operation hasn't
succeeded.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | drivers/misc/mei/client.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index e2af61f..451d417 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -1320,6 +1320,9 @@ int mei_cl_notify_request(struct mei_cl *cl, return -EOPNOTSUPP; } + if (!mei_cl_is_connected(cl)) + return -ENODEV; + rets = pm_runtime_get(dev->dev); if (rets < 0 && rets != -EINPROGRESS) { pm_runtime_put_noidle(dev->dev); |