dma operations

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Subject: dma operations
From: "Devvrat Tripathi" <tripathidevvrat@xxxxxxxxx>
Date: Wed, 20 Jun 2007 15:42:33 +0200

How does the kernel get to know whenever a dma transfer is completed. Does a call to dma_unmap_* always mean that a dma transfer to the said device has been completed. If not then what method is called to indicate a finished dma transfer.

regards

devvrat

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