From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Wed, 22 Oct 2014 22:36:28 +0000 (-0700)
Subject: staging: comedi: ni_at_a2150: use comedi_buf_write_samples()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7138e892a627215fad394160808d2084b51456d8;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

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 f1fe9efda6df..5c17def29f8d 100644
--- 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 */