Messages in this thread | | | From | Appana Durga Kedareswara Rao <> | Subject | RE: [PATCH v5 1/3] dmaengine: xilinx_dma: Check for channel idle state before submitting dma descriptor | Date | Fri, 13 Jan 2017 04:28:11 +0000 |
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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.
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