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@xxxxxxxxxxxxxxxxxxx> Cc: Ian Abbott <abbotti@xxxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/staging/comedi/drivers/ni_labpc_isadma.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/staging/comedi/drivers/ni_labpc_isadma.c b/drivers/staging/comedi/drivers/ni_labpc_isadma.c index 967202e..6d38605 100644 --- a/drivers/staging/comedi/drivers/ni_labpc_isadma.c +++ b/drivers/staging/comedi/drivers/ni_labpc_isadma.c @@ -91,7 +91,6 @@ void labpc_drain_dma(struct comedi_device *dev) int status; unsigned long flags; unsigned int max_points, num_points, residue, leftover; - int i; status = devpriv->stat1; @@ -122,9 +121,7 @@ void labpc_drain_dma(struct comedi_device *dev) leftover = max_points; } - /* 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; @@ -133,8 +130,6 @@ void labpc_drain_dma(struct comedi_device *dev) 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); -- 2.0.3 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
