Starting/Stopping power managed WdfQueues

NTDEV
1

I’d like to know if a WDF power managed queue will remain stopped after
WdfIoQueueStop until WdfIoQueueStart is called in spite of device power
transitions.

In other words, does WdfQueue have two gates (One power determined and
one user determined) or a single gate that will determine its current
state.

–
Vijairaj

2

Power managed state is separate from the start/stop state. You can see this behavior by manually stopping the queue with in flight requests and then powering down/up.

d

-----Original Message-----
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of xxxxx@gmail.com
Sent: Friday, October 26, 2007 4:40 AM
To: Windows System Software Devs Interest List
Subject: [ntdev] Starting/Stopping power managed WdfQueues

I’d like to know if a WDF power managed queue will remain stopped after
WdfIoQueueStop until WdfIoQueueStart is called in spite of device power
transitions.

In other words, does WdfQueue have two gates (One power determined and
one user determined) or a single gate that will determine its current
state.

–
Vijairaj

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