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| author | Lubomir Rintel <lkundrak@v3.sk> | 2020-04-19 18:49:10 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-04-23 12:45:10 +0530 |
| commit | 4719d4b71562182dcb86401898b0ee205ea28ee1 (patch) | |
| tree | 2c9b1edf82c1ccc5473244918d3156998a544ad0 | |
| parent | 0d8173f297dfedf1c11c7b6f9b1ec512c06d59a7 (diff) | |
| download | linux-stable-4719d4b71562182dcb86401898b0ee205ea28ee1.tar.gz linux-stable-4719d4b71562182dcb86401898b0ee205ea28ee1.tar.bz2 linux-stable-4719d4b71562182dcb86401898b0ee205ea28ee1.zip | |
dmaengine: mmp_tdma: Log an error if channel is in wrong state
Let's log an error if the channel can't be prepared because it is in an
unexpected state.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20200419164912.670973-6-lkundrak@v3.sk
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/mmp_tdma.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c index fa00665efd9d..1597f6ebf335 100644 --- a/drivers/dma/mmp_tdma.c +++ b/drivers/dma/mmp_tdma.c @@ -427,8 +427,10 @@ static struct dma_async_tx_descriptor *mmp_tdma_prep_dma_cyclic( int num_periods = buf_len / period_len; int i = 0, buf = 0; - if (tdmac->status != DMA_COMPLETE) + if (tdmac->status != DMA_COMPLETE) { + dev_err(tdmac->dev, "controller busy"); return NULL; + } if (period_len > TDMA_MAX_XFER_BYTES) { dev_err(tdmac->dev, |