Commit 925a7d04 authored Mar 18, 2016 by Andy Shevchenko Committed by Vinod Koul Apr 13, 2016

dmaengine: dw: set cdesc to NULL when free cyclic transfers



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: Vinod Koul <vinod.koul@intel.com>

parent b68fd097

drivers/dma/dw/core.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1522,6 +1522,8 @@ 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);