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dmaengine: jz4780: Kill tasklets before unregistering the device 

Tasklets may have been scheduled as a result of an earlier interrupt
that could still be running. Kill them before unregistering the
device.

Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: dmaengine@vger.kernel.org
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Alex Smith 2015-07-24 17:24:27 +01:00 committed by Vinod Koul
parent d509a83cea
commit ae9c02b421
1 changed files with 6 additions and 0 deletions
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6
drivers/dma/dma-jz4780.c
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@ -866,9 +866,15 @@ static int jz4780_dma_probe(struct platform_device *pdev)
static int jz4780_dma_remove(struct platform_device *pdev)
{
struct jz4780_dma_dev *jzdma = platform_get_drvdata(pdev);
int i;
of_dma_controller_free(pdev->dev.of_node);
free_irq(jzdma->irq, jzdma);
for (i = 0; i < JZ_DMA_NR_CHANNELS; i++)
tasklet_kill(&jzdma->chan[i].vchan.task);
dma_async_device_unregister(&jzdma->dma_device);
return 0;
}