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Commit 71f7e6cc authored by Peter Griffin's avatar Peter Griffin Committed by Vinod Koul
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dmaengine: tegra20-apb-dma: 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: default avatarPeter Griffin <peter.griffin@linaro.org>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent b9ab9d10

drivers/dma/tegra20-apb-dma.c

+1 −1
Original line number Diff line number Diff line
@@ -814,7 +814,7 @@ static enum dma_status tegra_dma_tx_status(struct dma_chan *dc, 
	unsigned int residual;



	ret = dma_cookie_status(dc, cookie, txstate);

	if (ret == DMA_COMPLETE)

	if (ret == DMA_COMPLETE || !txstate)

		return ret;



	spin_lock_irqsave(&tdc->lock, flags);