diff options
| author | Peter Griffin <peter.griffin@linaro.org> | 2016-06-07 18:38:36 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2016-06-21 21:35:00 +0530 |
| commit | 95b0aa3e10b08b9ee20b5f5e19d162d049744a9b (patch) | |
| tree | f5afdc01c602a01f124189c671047b3acc3a44f2 | |
| parent | a86144da9d1a439733a5aea526fe7c7b28b31d4a (diff) | |
dmaengine: coh901318: Only calculate residue if txstate exists.
There is no point in calculating the residue if there is no
txstate to store the value.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| -rw-r--r-- | drivers/dma/coh901318.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c index c340ca9bd2b5..c1006165cea8 100644 --- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -2422,7 +2422,7 @@ coh901318_tx_status(struct dma_chan *chan, dma_cookie_t cookie, enum dma_status ret; ret = dma_cookie_status(chan, cookie, txstate); - if (ret == DMA_COMPLETE) + if (ret == DMA_COMPLETE || !txstate) return ret; dma_set_residue(txstate, coh901318_get_bytes_left(chan)); |