From 880f582068ab8dc92c00dcea409c26e7ddaca675 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 22 Oct 2014 15:36:32 -0700 Subject: [PATCH] staging: comedi: das1800: use comedi_buf_write_samples() Use comedi_buf_write_samples() to add the samples to the async buffer. That function will handle single and multi samples writes by determining the number of bytes to add based on the number of samples and the bytes_per_sample(). Also, remove the unnecessary COMEDI_CB_BLOCK event. comedi_buf_write_samples() will automatically add that event after adding the samples to the async buffer. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/das1800.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/staging/comedi/drivers/das1800.c b/drivers/staging/comedi/drivers/das1800.c index 7b0b65e883f6..246a18648223 100644 --- a/drivers/staging/comedi/drivers/das1800.c +++ b/drivers/staging/comedi/drivers/das1800.c @@ -488,8 +488,7 @@ static void das1800_handle_fifo_half_full(struct comedi_device *dev, numPoints = devpriv->count; insw(dev->iobase + DAS1800_FIFO, devpriv->ai_buf0, numPoints); munge_data(dev, devpriv->ai_buf0, numPoints); - cfc_write_array_to_buffer(s, devpriv->ai_buf0, - numPoints * sizeof(devpriv->ai_buf0[0])); + comedi_buf_write_samples(s, devpriv->ai_buf0, numPoints); if (cmd->stop_src == TRIG_COUNT) devpriv->count -= numPoints; } @@ -512,7 +511,7 @@ static void das1800_handle_fifo_not_empty(struct comedi_device *dev, if (!unipolar) ; dpnt = munge_bipolar_sample(dev, dpnt); - cfc_write_to_buffer(s, dpnt); + comedi_buf_write_samples(s, &dpnt, 1); if (cmd->stop_src == TRIG_COUNT) devpriv->count--; } @@ -543,7 +542,7 @@ static void das1800_flush_dma_channel(struct comedi_device *dev, num_samples = devpriv->count; munge_data(dev, buffer, num_samples); - cfc_write_array_to_buffer(s, buffer, num_bytes); + comedi_buf_write_samples(s, buffer, num_samples); if (cmd->stop_src == TRIG_COUNT) devpriv->count -= num_samples; } @@ -649,7 +648,6 @@ static void das1800_ai_handler(struct comedi_device *dev) das1800_handle_fifo_not_empty(dev, s); } - async->events |= COMEDI_CB_BLOCK; /* if the card's fifo has overflowed */ if (status & OVF) { /* clear OVF interrupt bit */ -- 2.34.1