From: Peter Griffin Date: Tue, 7 Jun 2016 17:38:38 +0000 (+0100) Subject: dmaengine: ste_dma40: Only calculate residue if txstate exists. X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=a90e56e5b1779836132645e3352c7d5b60cddca8;p=openwrt%2Fstaging%2Fblogic.git dmaengine: ste_dma40: Only calculate residue if txstate exists. There is no point calculating the residue if there is no txstate to store the value. Signed-off-by: Peter Griffin Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 6fb8307468ab..378cc47aa63a 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -2588,7 +2588,7 @@ static enum dma_status d40_tx_status(struct dma_chan *chan, } ret = dma_cookie_status(chan, cookie, txstate); - if (ret != DMA_COMPLETE) + if (ret != DMA_COMPLETE && txstate) dma_set_residue(txstate, stedma40_residue(chan)); if (d40_is_paused(d40c))