[PATCH 5.10.y 1/2] dmaengine: qcom: bam_dma: Defer IRQ trigger type to device tree

[Sasha Levin <sashal@kernel.org>]

From: Vishnu Santhosh <vishnu.santhosh@oss.qualcomm.com>

[ Upstream commit 3cee6f79553202d7d3954555560ac38d719344b8 ]

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@oss.qualcomm.com>
Signed-off-by: Deepak Kumar Singh <deepak.singh@oss.qualcomm.com>
Signed-off-by: Vishnu Santhosh <vishnu.santhosh@oss.qualcomm.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260717-qcom-bam-dma-irq-trigger-v1-1-6405eac86f00@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Stable-dep-of: 82eed160cfa7 ("dmaengine: qcom: bam_dma: free interrupt before the clock in error path")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 db9359d259e24..f931f074dcdb8 100644
--- a/drivers/dma/qcom/bam_dma.c
+++ b/drivers/dma/qcom/bam_dma.c
@@ -1313,7 +1313,7 @@ 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;
 
-- 
2.53.0