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| author | Peter Griffin <peter.griffin@linaro.org> | 2016-06-07 19:38:38 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2016-06-21 18:05:00 +0200 |
| commit | a90e56e5b1779836132645e3352c7d5b60cddca8 (patch) | |
| tree | a79be2baf6c5839d9f53ca6022260fc78e4e505e /drivers/dma/ste_dma40.c | |
| parent | dmaengine: s3c24xx: Simplify code in s3c24xx_dma_tx_status() (diff) | |
| download | linux-a90e56e5b1779836132645e3352c7d5b60cddca8.tar.xz linux-a90e56e5b1779836132645e3352c7d5b60cddca8.zip | |
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 <peter.griffin@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ste_dma40.c')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 2 |
1 files changed, 1 insertions, 1 deletions
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)) |