diff options
| -rw-r--r-- | drivers/staging/comedi/drivers/addi_apci_3120.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/drivers/staging/comedi/drivers/addi_apci_3120.c b/drivers/staging/comedi/drivers/addi_apci_3120.c index ea53694e0d32..ba96fe5910e1 100644 --- a/drivers/staging/comedi/drivers/addi_apci_3120.c +++ b/drivers/staging/comedi/drivers/addi_apci_3120.c @@ -456,17 +456,8 @@ static void apci3120_interrupt_dma(struct comedi_device *dev, async->events |= COMEDI_CB_ERROR; return; } - nsamples = comedi_bytes_to_samples(s, nbytes); - - if (devpriv->use_double_buffer) { - struct apci3120_dmabuf *next_dmabuf; - - next_dmabuf = &devpriv->dmabuf[!devpriv->cur_dmabuf]; - - /* start DMA on next buffer */ - apci3120_init_dma(dev, next_dmabuf); - } + nsamples = comedi_bytes_to_samples(s, nbytes); if (nsamples) { comedi_buf_write_samples(s, dmabuf->virt, nsamples); @@ -479,10 +470,12 @@ static void apci3120_interrupt_dma(struct comedi_device *dev, return; if (devpriv->use_double_buffer) { - /* switch dma buffers for next interrupt */ + /* switch DMA buffers for next interrupt */ devpriv->cur_dmabuf = !devpriv->cur_dmabuf; + dmabuf = &devpriv->dmabuf[devpriv->cur_dmabuf]; + apci3120_init_dma(dev, dmabuf); } else { - /* restart DMA if is not using double buffering */ + /* restart DMA if not using double buffering */ apci3120_init_dma(dev, dmabuf); } } |