4.9-stable review patch. If anyone has any objections, please let me know.
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From: Kedareswara rao Appana appana.durga.rao@xilinx.com
[ Upstream commit 5ba080aada5e739165e0f38d5cc3b04c82b323c8 ]
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 appanad@xilinx.com Signed-off-by: Vinod Koul vinod.koul@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/dma/xilinx/zynqmp_dma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/dma/xilinx/zynqmp_dma.c +++ b/drivers/dma/xilinx/zynqmp_dma.c @@ -933,7 +933,8 @@ static void zynqmp_dma_chan_remove(struc 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); clk_disable_unprepare(chan->clk_apb);