On Tue, Jan 17, 2012 at 10:07 AM, Viresh Kumar [off-list ref] wrote:

quoted

Why do you want to do this?

This is because people can pass in flags which are
DMA_COMPL_SKIP_SRC_UNMAP, etc.

If they are not passed, then DMA driver must do it for them.

OK I see why it's confusing.

That flag is only for memcpy jobs.

Only memcpy jobs maps/unmaps buffers.

Slave transfers are mapped/unmapped by the driver.

Yours,
Linus Walleij