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| author | Peter Griffin <peter.griffin@linaro.org> | 2016-06-07 18:38:40 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2016-06-21 21:35:00 +0530 |
| commit | 71f7e6cc55003ca6f616ff4094253d28de5d9254 (patch) | |
| tree | 0e97aa6bad67fb634836a688258ace0c294cf075 /drivers/dma/tegra20-apb-dma.c | |
| parent | b9ab9d10d9898cd022fece44a474e5ddb785d639 (diff) | |
| download | linux-71f7e6cc55003ca6f616ff4094253d28de5d9254.tar.gz linux-71f7e6cc55003ca6f616ff4094253d28de5d9254.tar.bz2 linux-71f7e6cc55003ca6f616ff4094253d28de5d9254.zip | |
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: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/tegra20-apb-dma.c')
| -rw-r--r-- | drivers/dma/tegra20-apb-dma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index 01e316f73559..7f4af8c5b9d6 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -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); |