diff options
Diffstat (limited to 'drivers/dma/stm32-mdma.c')
| -rw-r--r-- | drivers/dma/stm32-mdma.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c index b9d4c843635f..a815833a701e 100644 --- a/drivers/dma/stm32-mdma.c +++ b/drivers/dma/stm32-mdma.c @@ -1237,6 +1237,10 @@ static int stm32_mdma_resume(struct dma_chan *c) unsigned long flags; u32 status, reg; + /* Transfer can be terminated */ + if (!chan->desc || (stm32_mdma_read(dmadev, STM32_MDMA_CCR(chan->id)) & STM32_MDMA_CCR_EN)) + return -EPERM; + hwdesc = chan->desc->node[chan->curr_hwdesc].hwdesc; spin_lock_irqsave(&chan->vchan.lock, flags); |