This is a note to let you know that I've just added the patch titled
dmaengine: zynqmp_dma: Fix race condition in the probe
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: dmaengine-zynqmp_dma-fix-race-condition-in-the-probe.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Thu Mar 22 14:40:24 CET 2018
From: Kedareswara rao Appana appana.durga.rao@xilinx.com Date: Thu, 7 Dec 2017 10:54:28 +0530 Subject: dmaengine: zynqmp_dma: Fix race condition in the probe
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);
Patches currently in stable-queue which might be from appana.durga.rao@xilinx.com are
queue-4.9/dmaengine-zynqmp_dma-fix-race-condition-in-the-probe.patch