Stream to Memory sgdma problem

I am having two problems with the sg-dma in my system. My first issue is that the sg-dma ready signal goes low after the first element of streaming data, then returns high on the third. This causes the second element to be skipped. I am streaming data at the same rate as the sg-dma clock.

My second issue is that I can not re-use the descriptors. I try to set the hardware owned bit to 1 by the following command: DMA_desc[0].control=128;

The sg-dma ready signal goes high when I call the do_async_transfer() function, but it toggles low when it gets streaming data. No data is transferred to memory.

Can anyone help??

Thanks.