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 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
dmaengine-zynqmp_dma-fix-race-condition-in-the-probe.patch
and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Mar 22 14:03:39 CET 2018
From: Kedareswara rao Appana <appana.durga.rao@xxxxxxxxxx>
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@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
Signed-off-by: Vinod Koul <vinod.koul@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
@@ -838,7 +838,8 @@ 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@xxxxxxxxxx are
queue-4.15/dmaengine-zynqmp_dma-fix-race-condition-in-the-probe.patch