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 <[email protected]> --- 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 78be785..86e55ab 100644 --- a/drivers/dma/dw/core.c +++ b/drivers/dma/dw/core.c @@ -1493,6 +1493,8 @@ 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
