Patch "mei: request async autosuspend at the end of enumeration" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

mei: request async autosuspend at the end of enumeration

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
mei-request-async-autosuspend-at-the-end-of-enumeration.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Alexander Usyskin <[email protected]>
Date: Thu, 24 Nov 2016 13:34:02 +0200
Subject: mei: request async autosuspend at the end of enumeration

From: Alexander Usyskin <[email protected]>

commit d5f8e166c25750adc147b0adf64a62a91653438a upstream.

pm_runtime_autosuspend can take synchronous or asynchronous paths, Because we are calling pm_runtime_mark_last_busy just before this most of the cases it takes the asynchronous way. However, when the FW or driver resets during already running runtime suspend, the call will result in calling to the driver's rpm callback and results in a deadlock on device_lock.
The simplest fix is to replace pm_runtime_autosuspend with asynchronous pm_request_autosuspend.

---
 drivers/misc/mei/client.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -686,7 +686,7 @@ void mei_host_client_init(struct mei_dev
 
 	pm_runtime_mark_last_busy(dev->dev);
 	dev_dbg(dev->dev, "rpm: autosuspend\n");
-	pm_runtime_autosuspend(dev->dev);
+	pm_request_autosuspend(dev->dev);
 }
 
 /**

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/mei-request-async-autosuspend-at-the-end-of-enumeration.patch queue-4.9/mei-me-add-lewisburg-device-ids.patch