dmaengine: coh901318: Only calculate residue if txstate exists.

[linux-2.6-microblaze.git] / drivers / dma / coh901318.c

diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c
index c340ca9..c100616 100644 (file)
--- 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));