RE: [PATCH v5 1/3] dmaengine: xilinx_dma: Check for channel idle state before submitting dma descriptor

[Appana Durga Kedareswara Rao]

Hi Vinod,

        Thanks for the review...
> 
> On Sat, Jan 07, 2017 at 12:15:28PM +0530, Kedareswara rao Appana wrote:
> > Add channel idle state to ensure that dma descriptor is not
> > submitted when VDMA engine is in progress.
> 
> any reason why you want to make your own varible and not use the HW to
> query
> as done earlier. It is not clear to me why that is removed from description

We need to poll for a bit in the status register to know the dma state.
We are currently doing that in the driver hot path
To avoid this using own variables.

Regards,
Kedar.