[PATCH] dmaengine: qcom: bam_dma: Defer IRQ trigger type to device tree

[Vishnu Santhosh]

The driver hardcodes IRQF_TRIGGER_HIGH when registering the BAM
interrupt, which overrides the trigger type specified in the device
tree. On Qualcomm Shikra SoC, the A2 BAM signals an edge interrupt
to the apps processor; registering it as level-high causes the
interrupt to not fire, resulting in missed DMA completions.

Use IRQF_TRIGGER_NONE instead, which causes the kernel to use the
trigger type already configured by platform_get_irq() when it parsed
the device tree interrupts property. This makes the driver
platform-agnostic.

Fixes: e7c0fe2a5c84 ("dmaengine: add Qualcomm BAM dma driver")
Co-developed-by: Deepak Kumar Singh <deepak.singh@xxxxxxxxxxxxxxxx>
Signed-off-by: Deepak Kumar Singh <deepak.singh@xxxxxxxxxxxxxxxx>
Signed-off-by: Vishnu Santhosh <vishnu.santhosh@xxxxxxxxxxxxxxxx>
---
 drivers/dma/qcom/bam_dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c
index 19116295f8325767a0d97a7848077885b118241c..6c3e2ca8a572fd04c925de0adbd5cc0616b361ef 100644
--- a/drivers/dma/qcom/bam_dma.c
+++ b/drivers/dma/qcom/bam_dma.c
@@ -1303,7 +1303,7 @@ static int bam_dma_probe(struct platform_device *pdev)
 		bam_channel_init(bdev, &bdev->channels[i], i);
 
 	ret = devm_request_irq(bdev->dev, bdev->irq, bam_dma_irq,
-			IRQF_TRIGGER_HIGH, "bam_dma", bdev);
+			IRQF_TRIGGER_NONE, "bam_dma", bdev);
 	if (ret)
 		goto err_bam_channel_exit;
 

---
base-commit: 9716c086c8e8b141d35aa61f2e96a2e83de212a7
change-id: 20260601-qcom-bam-dma-irq-trigger-0366e7e86f17

Best regards,
-- 
Vishnu Santhosh <vishnu.santhosh@xxxxxxxxxxxxxxxx>