DMA Engine has support for the callback_result which provides
the status of the request and the residue. This helps in
determining the correct status of the request and in
efficient resource management of the request.
The 'callback_result' method is preferred over the deprecated
'callback' method.

Signed-off-by: Devendra K Verma <devverma@amd.com>
---
 drivers/dma/dw-edma/dw-edma-core.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c
index b43255f914f3..8e5f7defa6b6 100644
--- a/drivers/dma/dw-edma/dw-edma-core.c
+++ b/drivers/dma/dw-edma/dw-edma-core.c
@@ -584,6 +584,25 @@ dw_edma_device_prep_interleaved_dma(struct dma_chan *dchan,
 	return dw_edma_device_transfer(&xfer);
 }
 
+static void dw_hdma_set_callback_result(struct virt_dma_desc *vd,
+					enum dmaengine_tx_result result)
+{
+	u32 residue = 0;
+	struct dw_edma_desc *desc;
+	struct dmaengine_result *res;
+
+	if (!vd->tx.callback_result)
+		return;
+
+	desc = vd2dw_edma_desc(vd);
+	if (desc)
+		residue = desc->alloc_sz - desc->xfer_sz;
+
+	res = &vd->tx_result;
+	res->result = result;
+	res->residue = residue;
+}
+
 static void dw_edma_done_interrupt(struct dw_edma_chan *chan)
 {
 	struct dw_edma_desc *desc;
@@ -597,6 +616,8 @@ static void dw_edma_done_interrupt(struct dw_edma_chan *chan)
 		case EDMA_REQ_NONE:
 			desc = vd2dw_edma_desc(vd);
 			if (!desc->chunks_alloc) {
+				dw_hdma_set_callback_result(vd,
+							    DMA_TRANS_NOERROR);
 				list_del(&vd->node);
 				vchan_cookie_complete(vd);
 			}
@@ -633,6 +654,7 @@ static void dw_edma_abort_interrupt(struct dw_edma_chan *chan)
 	spin_lock_irqsave(&chan->vc.lock, flags);
 	vd = vchan_next_desc(&chan->vc);
 	if (vd) {
+		dw_hdma_set_callback_result(vd, DMA_TRANS_ABORTED);
 		list_del(&vd->node);
 		vchan_cookie_complete(vd);
 	}
-- 
2.43.0

On Thu, 21 Aug 2025 17:45:05 +0530, Devendra K Verma wrote:
> DMA Engine has support for the callback_result which provides
> the status of the request and the residue. This helps in
> determining the correct status of the request and in
> efficient resource management of the request.
> The 'callback_result' method is preferred over the deprecated
> 'callback' method.
> 
> [...]

Applied, thanks!

[1/1] dmaengine: dw-edma: Set status for callback_result
      commit: 5e742de97c806a4048418237ef1283e7d71eaf4b

Best regards,
-- 
~Vinod