From: Lubomir Rintel Date: Sun, 19 Apr 2020 16:49:10 +0000 (+0200) Subject: dmaengine: mmp_tdma: Log an error if channel is in wrong state X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4719d4b71562182dcb86401898b0ee205ea28ee1;p=linux.git 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 Link: https://lore.kernel.org/r/20200419164912.670973-6-lkundrak@v3.sk Signed-off-by: Vinod Koul --- diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c index fa00665efd9d8..1597f6ebf3357 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,