mei: me: wait for hw ready non-interruptible

We cannot handle user interrupt in context of hw initialization
so we only wait for time out which is reasonably short
Also we don't need to check error from wait, only flag value.

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>

drivers/misc/mei/hw-me.c

@@ -266,19 +266,14 @@ static bool mei_me_hw_is_ready(struct mei_device *dev)
 
 static int mei_me_hw_ready_wait(struct mei_device *dev)
 {
-	int err;
-
 	mutex_unlock(&dev->device_lock);
-	err = wait_event_interruptible_timeout(dev->wait_hw_ready,
+	wait_event_timeout(dev->wait_hw_ready,
 			dev->recvd_hw_ready,
 			mei_secs_to_jiffies(MEI_HW_READY_TIMEOUT));
 	mutex_lock(&dev->device_lock);
-	if (!err && !dev->recvd_hw_ready) {
-		if (!err)
-			err = -ETIME;
-		dev_err(&dev->pdev->dev,
-			"wait hw ready failed. status = %d\n", err);
-		return err;
+	if (!dev->recvd_hw_ready) {
+		dev_err(&dev->pdev->dev, "wait hw ready failed\n");
+		return -ETIME;
 	}
 
 	dev->recvd_hw_ready = false;
@@ -664,7 +659,7 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
 			dev_dbg(&dev->pdev->dev, "we need to start the dev.\n");
 
 			dev->recvd_hw_ready = true;
-			wake_up_interruptible(&dev->wait_hw_ready);
+			wake_up(&dev->wait_hw_ready);
 		} else {
 			dev_dbg(&dev->pdev->dev, "Spurious Interrupt\n");
 		}