[PATCH] crypto: qce: Provide dev_err_probe() status on DMA failure

From: Bjorn Andersson

Date: Fri Oct 24 2025 - 17:35:23 EST


On multiple occasions the qce device have shown up in devices_deferred,
without the explanation that this came from the failure to acquire the
DMA channels from the associated BAM.

Use dev_err_probe() to associate this context with the failure to faster
pinpoint the culprit when this happens in the future.

Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxxxx>
---
drivers/crypto/qce/dma.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/qce/dma.c b/drivers/crypto/qce/dma.c
index 1dec7aea852d..68cafd4741ad 100644
--- a/drivers/crypto/qce/dma.c
+++ b/drivers/crypto/qce/dma.c
@@ -24,11 +24,13 @@ int devm_qce_dma_request(struct device *dev, struct qce_dma_data *dma)

dma->txchan = dma_request_chan(dev, "tx");
if (IS_ERR(dma->txchan))
- return PTR_ERR(dma->txchan);
+ return dev_err_probe(dev, PTR_ERR(dma->txchan),
+ "Failed to get TX DMA channel\n");

dma->rxchan = dma_request_chan(dev, "rx");
if (IS_ERR(dma->rxchan)) {
- ret = PTR_ERR(dma->rxchan);
+ ret = dev_err_probe(dev, PTR_ERR(dma->rxchan),
+ "Failed to get RX DMA channel\n");
goto error_rx;
}


---
base-commit: 72fb0170ef1f45addf726319c52a0562b6913707
change-id: 20251024-qce-dma-err-probe-a7609d65bac6

Best regards,
--
Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxxxx>