diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ste_dma40.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index c9f485e3bae..05d0a993761 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -768,6 +768,9 @@ static int d40_pause(struct dma_chan *chan) int res = 0; unsigned long flags; + if (!d40c->busy) + return 0; + spin_lock_irqsave(&d40c->lock, flags); res = d40_channel_execute_command(d40c, D40_DMA_SUSPEND_REQ); @@ -792,6 +795,9 @@ static int d40_resume(struct dma_chan *chan) int res = 0; unsigned long flags; + if (!d40c->busy) + return 0; + spin_lock_irqsave(&d40c->lock, flags); if (d40c->base->rev == 0) |