[PATCH] dma: mmp_tdma: kill tasklet when free dma channel

[Qiao Zhou]

kill tasklet task when free dam channel, otherwise the task may
run after related resource is released, then unknown things may
happen.

Signed-off-by: Qiao Zhou <zhouqiao@xxxxxxxxxxx>
---
 drivers/dma/mmp_tdma.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index 43d5a6c..2622b2a 100644
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -333,6 +333,9 @@ static void mmp_tdma_free_chan_resources(struct dma_chan *chan)
 
 	if (tdmac->irq)
 		devm_free_irq(tdmac->dev, tdmac->irq, tdmac);
+
+	tasklet_kill(&tdmac->tasklet);
+
 	mmp_tdma_free_descriptor(tdmac);
 	return;
 }
-- 
1.7.0.4

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