On Tue, Sep 18, 2012 at 10:52 PM, Russell King - ARM Linux <[email protected]> wrote:
> There's a clue in that paragraph about how the DMA engine TX descriptors > _should_ be handled. "hold a reference" is the clue. Or another way to > say it, a kref should be embedded in the structure, providing us with > proper reference counting - and descriptors should only be 'freed' > (whether that means actually freeing them or placing them into a free > list) when the last reference is dropped. That's _much_ better to > understand than this DMA_CTRL_ACK business... This indeed sounds like a more robust approach by far. Why didn't we do that from the beginning ... Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
