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staging: comedi: ni_at_a2150: use comedi_buf_write_samples()

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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>
This commit is contained in:
H Hartley Sweeten 2014-10-22 15:36:28 -07:00 committed by Greg Kroah-Hartman
parent ad9eb43c93
commit 7138e892a6
1 changed files with 1 additions and 3 deletions
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4
drivers/staging/comedi/drivers/ni_at_a2150.c
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@ -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 */