staging: comedi: ni_at_a2150: use comedi_buf_write_samples()

Use comedi_buf_write_samples() instead of cfc_write_to_buffer() to add the
single sample to the async buffer.

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>

diff --git a/drivers/staging/comedi/drivers/ni_at_a2150.c b/drivers/staging/comedi/drivers/ni_at_a2150.c
index f1fe9efda6df5367ed628bcb0582b995f7236d90..5c17def29f8debb59f2c6f5faf07f22ce33de53a 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_at_a2150.c
+++ b/drivers/staging/comedi/drivers/ni_at_a2150.c
@@ -237,7 +237,7 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
                dpnt = devpriv->dma_buffer[i];
                /*  convert from 2's complement to unsigned coding */
                dpnt ^= 0x8000;
-               cfc_write_to_buffer(s, dpnt);
+               comedi_buf_write_samples(s, &dpnt, 1);
                if (cmd->stop_src == TRIG_COUNT) {
                        if (--devpriv->count == 0) {    /* end of acquisition */
                                async->events |= COMEDI_CB_EOA;
@@ -253,8 +253,6 @@ static irqreturn_t a2150_interrupt(int irq, void *d)
        }
        release_dma_lock(flags);
 
-       async->events |= COMEDI_CB_BLOCK;
-
        comedi_handle_events(dev, s);
 
        /* clear interrupt */