diff options
| -rw-r--r-- | drivers/staging/comedi/drivers/das16.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/drivers/staging/comedi/drivers/das16.c b/drivers/staging/comedi/drivers/das16.c index cd2fa4cafc44..df7bf1e26c5e 100644 --- a/drivers/staging/comedi/drivers/das16.c +++ b/drivers/staging/comedi/drivers/das16.c @@ -350,21 +350,14 @@ static int disable_dma_on_even(struct comedi_device *dev) static void das16_interrupt(struct comedi_device *dev) { struct das16_private_struct *devpriv = dev->private; - unsigned long dma_flags, spin_flags; struct comedi_subdevice *s = dev->read_subdev; - struct comedi_async *async; - struct comedi_cmd *cmd; + struct comedi_async *async = s->async; + struct comedi_cmd *cmd = &async->cmd; + unsigned long spin_flags; + unsigned long dma_flags; int num_bytes, residue; int buffer_index; - if (!dev->attached) { - comedi_error(dev, "premature interrupt"); - return; - } - /* initialize async here to make sure it is not NULL */ - async = s->async; - cmd = &async->cmd; - spin_lock_irqsave(&dev->spinlock, spin_flags); if ((devpriv->ctrl_reg & DMA_ENABLE) == 0) { spin_unlock_irqrestore(&dev->spinlock, spin_flags); |