Calling synchronize_irq() right before devm_free_irq() is quite useless. On
one hand the IRQ can easily fire again before devm_free_irq() is entered,
on the other hand devm_free_irq() itself calls synchronize_irq() internally
(in a race condition free way), before any state associated with the IRQ is
freed.
Patch was generated using the following semantic patch:
// <smpl>
@@
expression irq, dev;
@@
-synchronize_irq(irq);
devm_free_irq(dev, irq, ...);
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/dma/img-mdc-dma.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/dma/img-mdc-dma.c b/drivers/dma/img-mdc-dma.c
index 9ca5683..42ae58d 100644
--- a/drivers/dma/img-mdc-dma.c
+++ b/drivers/dma/img-mdc-dma.c
@@ -979,7 +979,6 @@ static int mdc_dma_remove(struct platform_device *pdev)
vc.chan.device_node) {
list_del(&mchan->vc.chan.device_node);
- synchronize_irq(mchan->irq);
devm_free_irq(&pdev->dev, mchan->irq, mchan);
tasklet_kill(&mchan->vc.task);
--
2.1.4
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