Re: [PATCH v2 1/3] dmaengine: add new dma API formax_segment_number

[FUJITA Tomonori]

On Mon, 6 Jun 2011 11:48:56 -0700
Dan Williams <dan.j.williams@xxxxxxxxx> wrote:

> dmaengine expands the class of dma providers to include standalone dma
> agents on a host bus (or elsewhere) in addition to the traditional bus
> mastering host-bus-adapters that the existing api understands.  So in
> the case of slave dma the dma capabilities of the block-device are
> irrelevant because another agent will do the transfer on behalf of the
> block-device driver.  So the value should be whatever the dma device
> driver says it is.

The dma parameter restriction could be due to software (HBA drivers,
or subsystem). The value should be whatever the dma device driver says
it is in such case?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/