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mei: fix return value on disconnect timeout 

wait_event_timeout can return 0 or the remaining jiffies
so return -ETIME if disconnected state not reached.

Cc: stable@vger.kernel.org # 3.10+
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>
This commit is contained in:
Alexander Usyskin 2014-07-17 10:53:38 +03:00 committed by Greg Kroah-Hartman
parent d5d83f8abe
commit fe2f17eb3d
1 changed files with 5 additions and 10 deletions
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15
drivers/misc/mei/client.c
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@ -459,7 +459,7 @@ int mei_cl_disconnect(struct mei_cl *cl)
{
struct mei_device *dev;
struct mei_cl_cb *cb;
int rets, err;
int rets;
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
@ -501,23 +501,18 @@ int mei_cl_disconnect(struct mei_cl *cl)
}
mutex_unlock(&dev->device_lock);
err = wait_event_timeout(dev->wait_recvd_msg,
wait_event_timeout(dev->wait_recvd_msg,
MEI_FILE_DISCONNECTED == cl->state,
mei_secs_to_jiffies(MEI_CL_CONNECT_TIMEOUT));
mutex_lock(&dev->device_lock);
if (MEI_FILE_DISCONNECTED == cl->state) {
rets = 0;
cl_dbg(dev, cl, "successfully disconnected from FW client.\n");
} else {
rets = -ENODEV;
if (MEI_FILE_DISCONNECTED != cl->state)
cl_err(dev, cl, "wrong status client disconnect.\n");
if (err)
cl_dbg(dev, cl, "wait failed disconnect err=%d\n", err);
cl_err(dev, cl, "failed to disconnect from FW client.\n");
cl_dbg(dev, cl, "timeout on disconnect from FW client.\n");
rets = -ETIME;
}
mei_io_list_flush(&dev->ctrl_rd_list, cl);