[RFC PATCH] dmaengine: xilinx_dma: Fix per-channel direction reporting via device_caps

[Folker Schwesinger]

On Thu Mar 5, 2026 at 8:23 AM CET, Rahul Navale wrote:
> I applied the residue_granularity/has_sg gating patch you provided. I kept:
> 7e01511443c3 applied + RFC patch(xilinx_dma_device_caps + printk) +
> dmaengine.c debug patch applied (dma_slave_caps_printk() + dump_stack()) +
> all caps assignment in dma_get_slave_caps() enabled again.
>
> The audio issue is not fixed. Playback still fails after the first buffer period.

Could you show the debug output from dma_get_slave_caps()? The stack
traces are not needed.