[PATCH 2/6] dmaengine/dw_dmac: Enable resubmission from callback routine.

[Russell King - ARM Linux]

On Tue, Apr 19, 2011 at 11:42:24AM +0530, Koul, Vinod wrote:
> On 04/18/2011 04:20 PM, viresh kumar wrote:
> > 
> > Resubmission of new transfer must be allowed from callbacks. For this release
> > lock before calling callback routine and enable them again.
> Why would you like to do that?
> 
> IMO it's not a good thing as you are essentially doing it in your tasklet...
> Make sure the submit() is done by client before this and you use it to start
> next transaction in you tasklet and let client know in callback txn is
> finished.

No.  Submission is explicitly permitted (by Dan) in slave DMA callbacks.