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staging: comedi: adl_pci9118: use comedi_bytes_to_samples()

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Remove the assumption of the sample size by using the comedi_bytes_to_samples()
helper function to convert the number of bytes to the number of samples.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2014-11-10 17:57:56 -07:00 committed by Greg Kroah-Hartman
parent e57bfa673c
commit f6266a41d8
1 changed files with 1 additions and 3 deletions
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4
drivers/staging/comedi/drivers/adl_pci9118.c
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@ -607,11 +607,9 @@ static void interrupt_pci9118_ai_dma(struct comedi_device *dev,
struct pci9118_private *devpriv = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
struct pci9118_dmabuf *dmabuf = &devpriv->dmabuf[devpriv->dma_actbuf];
unsigned int nsamples;
unsigned int nsamples = comedi_bytes_to_samples(s, dmabuf->use_size);
unsigned int next_dma_buf;
nsamples = dmabuf->use_size >> 1; /* number of received samples */
if (devpriv->dma_doublebuf) { /*
* switch DMA buffers if is used
* double buffering