How to Acknowledge SDIO interrupt in Windows CE

Hi,

I am working on Windows CE SDIO WLAN driver. I have a prior experience on Windows 7 SDIO driver. In Windows 7 case there is an callback “BusInterface.AcknowledgeInterrupt()” to acknowledge interrupt after servicing it.

Msdn Doc says “The client driver is responsible for clearing the source of the interrupt before exiting the interrupt callback. Failure to do this will result in the immediate re-assertion of the interrupt.”

How can I clear the source of interrupt and how can I acknowledge interrupt in Windows CE?

Thanks