From 5ba080aada5e739165e0f38d5cc3b04c82b323c8 Mon Sep 17 00:00:00 2001 From: Kedareswara rao Appana Date: Thu, 7 Dec 2017 10:54:28 +0530 Subject: [PATCH] dmaengine: zynqmp_dma: Fix race condition in the probe Incase of interrupt property is not present, Driver is trying to free an invalid irq, This patch fixes it by adding a check before freeing the irq. Signed-off-by: Kedareswara rao Appana Signed-off-by: Vinod Koul --- drivers/dma/xilinx/zynqmp_dma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c index a297a2659848..f14645817ed8 100644 --- a/drivers/dma/xilinx/zynqmp_dma.c +++ b/drivers/dma/xilinx/zynqmp_dma.c @@ -851,7 +851,8 @@ static void zynqmp_dma_chan_remove(struct zynqmp_dma_chan *chan) if (!chan) return; - devm_free_irq(chan->zdev->dev, chan->irq, chan); + if (chan->irq) + devm_free_irq(chan->zdev->dev, chan->irq, chan); tasklet_kill(&chan->tasklet); list_del(&chan->common.device_node); }