Use comedi_buf_write_samples() instead of cfc_write_to_buffer() to add all
the samples to the async buffer in one operation.
The core will add the COMEDI_CB_BLOCK event when data is written to the
async buffer. Remove the unnecessary event in the driver.
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>
int status;
unsigned long flags;
unsigned int max_points, num_points, residue, leftover;
int status;
unsigned long flags;
unsigned int max_points, num_points, residue, leftover;
- /* write data to comedi buffer */
- for (i = 0; i < num_points; i++)
- cfc_write_to_buffer(s, devpriv->dma_buffer[i]);
+ comedi_buf_write_samples(s, devpriv->dma_buffer, num_points);
if (cmd->stop_src == TRIG_COUNT)
devpriv->count -= num_points;
if (cmd->stop_src == TRIG_COUNT)
devpriv->count -= num_points;
set_dma_addr(devpriv->dma_chan, devpriv->dma_addr);
set_dma_count(devpriv->dma_chan, leftover * sample_size);
release_dma_lock(flags);
set_dma_addr(devpriv->dma_chan, devpriv->dma_addr);
set_dma_count(devpriv->dma_chan, leftover * sample_size);
release_dma_lock(flags);
-
- async->events |= COMEDI_CB_BLOCK;
}
EXPORT_SYMBOL_GPL(labpc_drain_dma);
}
EXPORT_SYMBOL_GPL(labpc_drain_dma);