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staging: comedi: usbduxfast: use comedi_buf_write_samples()

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Use comedi_buf_write_samples() to add the samples to the async buffer.
That function will determining the number of bytes to add based on the
bytes_per_sample().

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 2014-10-22 15:36:45 -07:00 committed by Greg Kroah-Hartman
parent 504d0239f6
commit f81ac41b89
1 changed files with 2 additions and 4 deletions
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6
drivers/staging/comedi/drivers/usbduxfast.c
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@ -249,19 +249,17 @@ static void usbduxfast_ai_handle_urb(struct comedi_device *dev,
devpriv->ignore--;
} else {
unsigned int nbytes = urb->actual_length;
unsigned int nsamples = nbytes / bytes_per_sample(s);
if (cmd->stop_src == TRIG_COUNT) {
unsigned int nsamples = nbytes / bytes_per_sample(s);
if (devpriv->ai_sample_count < nsamples) {
nsamples = devpriv->ai_sample_count;
async->events |= COMEDI_CB_EOA;
}
devpriv->ai_sample_count -= nsamples;
nbytes = nsamples * bytes_per_sample(s);
}
cfc_write_array_to_buffer(s, urb->transfer_buffer, nbytes);
comedi_buf_write_samples(s, urb->transfer_buffer, nsamples);
}
/* if command is still running, resubmit urb for BULK transfer */