EvtDevicePrepareHardware IRQL level

NTDEV
1

Hi there,

At what IRQL level does EvtDevicePrepareHardware is called. I read that D0Entry event is always called at PASSIVE_LEVEL. Is the same true for PrepareHardware too?

Thanks
Suhail

2

> Hi there,

At what IRQL level does EvtDevicePrepareHardware is called. I read
that
D0Entry event is always called at PASSIVE_LEVEL. Is the same true for
PrepareHardware too?

In the 18000.6002 docs for EvtDevicePrepareHardware it is pretty clearly
spelled out - “IRQL: PASSIVE_LEVEL”.

Ditto for the online docs -
http://msdn.microsoft.com/en-us/library/aa491092.aspx

James

3

Read the docs luke, http://msdn.microsoft.com/en-us/library/aa491092.aspx

All pnp and power related Evt callbacks are invoked at PASSIVE_LEVEL with the exception of EvtInterruptEnable/Disable which is invoked at DIRQL (to synchronize with the ISR)

d

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Sent: Thursday, February 05, 2009 3:55 PM
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Subject: [ntdev] EvtDevicePrepareHardware IRQL level

Hi there,

At what IRQL level does EvtDevicePrepareHardware is called. I read that D0Entry event is always called at PASSIVE_LEVEL. Is the same true for PrepareHardware too?

Thanks
Suhail

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4

Thanks folks. I forgot to read the Requirements part of the docs. Sorry for the mistake.