On Mon, Mar 21, 2011 at 05:03:15PM -0400, Florian Mickler wrote: > I guess (not verified), that the dma api takes sufficient precautions > to abort the dma transfer if a timeout happens. So freeing _should_ > not be an issue. (At least, I would expect big fat warnings everywhere > if that were the case) Freeing is very well an issue. All you can expect from the DMA-API is to give you a valid DMA handle for your device. But it can not prevent that a device uses this handle after you returned it. You need to make sure yourself that any pending DMA is canceled before calling kfree(). Joerg -- AMD Operating System Research Center Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach General Managers: Alberto Bozzo, Andrew Bowd Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
