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| author | Lars-Peter Clausen <lars@metafoo.de> | 2015-11-21 12:09:47 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-12-05 15:56:27 +0530 |
| commit | 1f281792f649fc40054fc9146d8aa6b8b3c2aaff (patch) | |
| tree | f16f04d16f3c6105490fef741052cb1863ab7407 /drivers/dma/at_xdmac.c | |
| parent | 82d149b86d31e11fbbbc1b850bebffe1bfa2e82d (diff) | |
| download | linux-1f281792f649fc40054fc9146d8aa6b8b3c2aaff.tar.gz linux-1f281792f649fc40054fc9146d8aa6b8b3c2aaff.tar.bz2 linux-1f281792f649fc40054fc9146d8aa6b8b3c2aaff.zip | |
dmaengine: at_xdmac: Remove unnecessary synchronize_irq() before free_irq()
Calling synchronize_irq() right before free_irq() is quite useless. On one
hand the IRQ can easily fire again before free_irq() is entered, on the
other hand 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;
@@
-synchronize_irq(irq);
free_irq(irq, ...);
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/at_xdmac.c')
| -rw-r--r-- | drivers/dma/at_xdmac.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index f2b6e7d22765..d0ae4613b87e 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -2007,8 +2007,6 @@ static int at_xdmac_remove(struct platform_device *pdev) dma_async_device_unregister(&atxdmac->dma); clk_disable_unprepare(atxdmac->clk); - synchronize_irq(atxdmac->irq); - free_irq(atxdmac->irq, atxdmac->dma.dev); for (i = 0; i < atxdmac->dma.chancnt; i++) { |