[PATCH RFC] dmaengine: fsl-edma: Fix return code for unhandled interrupts

[Stefan Wahren]

For fsl,imx93-edma4 two DMA channels share the same interrupt.
So in case fsl_edma3_tx_handler is called for the "wrong"
channel, the return code must be IRQ_NONE. This signalize that
the interrupt wasn't handled.

Fixes: 72f5801a4e2b ("dmaengine: fsl-edma: integrate v3 support")
Signed-off-by: Stefan Wahren <wahrenst at gmx.net>
---

Hi,
this issue was found on a custom i.MX93 board. This patch has been
tested on the same platform.

 drivers/dma/fsl-edma-main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c
index 756d67325db5..66bfa28d984e 100644
--- a/drivers/dma/fsl-edma-main.c
+++ b/drivers/dma/fsl-edma-main.c
@@ -57,7 +57,7 @@ static irqreturn_t fsl_edma3_tx_handler(int irq, void *dev_id)
 
 	intr = edma_readl_chreg(fsl_chan, ch_int);
 	if (!intr)
-		return IRQ_HANDLED;
+		return IRQ_NONE;
 
 	edma_writel_chreg(fsl_chan, 1, ch_int);
 
-- 
2.34.1