| From | Mans Rullgard <> | Subject | [PATCH 15/15] dmaengine: dw: set cdesc to NULL when free cyclic transfers | Date | Sun, 24 Jan 2016 19:22:02 +0000 |
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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To be sure we have the cyclic transfers already gone we set cdesc to NULL. It will prevent the double free.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mans Rullgard <mans@mansr.com> --- drivers/dma/dw/core.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c index b6634adf24f9..5606deb7f060 100644 --- a/drivers/dma/dw/core.c +++ b/drivers/dma/dw/core.c @@ -1480,6 +1480,8 @@ void dw_dma_cyclic_free(struct dma_chan *chan) kfree(cdesc->desc); kfree(cdesc); + dwc->cdesc = NULL; + clear_bit(DW_DMA_IS_CYCLIC, &dwc->flags); } EXPORT_SYMBOL(dw_dma_cyclic_free); -- 2.7.0
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