6.6-stable review patch. If anyone has any objections, please let me know.
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From: Stefan Wahren wahrenst@gmx.net
[ Upstream commit 5e27af0514e2249a9ccc9a762abd3b74e03a1f90 ]
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@gmx.net Reviewed-by: Joy Zou joy.zou@nxp.com Link: https://lore.kernel.org/r/20250424114829.9055-1-wahrenst@gmx.net Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 cc9923ab686dc..eccbcf67951fb 100644 --- a/drivers/dma/fsl-edma-main.c +++ b/drivers/dma/fsl-edma-main.c @@ -58,7 +58,7 @@ 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);