linux-kernel - [PATCH 34/34] Staging: comedi: drivers: cd

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Date:	Sat, 30 Jul 2016 13:04:55 -0700
From:	Nadim almas <nadim.902@...il.com>
To:	abbotti@....co.uk
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	devel@...verdev.osuosl.org, Nadim almas <nadim.902@...il.com>
Subject: [PATCH 34/34] Staging: comedi: drivers: cd_pcidas: Compression of

This patch compresses two lines in to a single line in file
cb_pcidas.c
if immediate return statement is found. It also removes variable
bytes_written as it is no longer needed.

It is done using script Coccinelle. And coccinelle uses following
semantic patch for this compression function:

@@
expression e, ret;
@@

-ret =
+return
     e;
-return ret

Signed-off-by: Nadim Almas <nadim.902@...il.com>
---
 
 drivers/staging/comedi/drivers/cb_pcidas64.c | 4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)


 
diff --git a/drivers/staging/comedi/drivers/cb_pcidas64.c b/drivers/staging/comedi/drivers/cb_pcidas64.c
index 1f9c08a..d30cf3d 100644
--- a/drivers/staging/comedi/drivers/cb_pcidas64.c
+++ b/drivers/staging/comedi/drivers/cb_pcidas64.c
@@ -1408,9 +1408,7 @@ static int set_ai_fifo_size(struct comedi_device *dev, unsigned int num_samples)
 	if (retval < 0)
 		return retval;
 
-	num_samples = retval * fifo->num_segments * fifo->sample_packing_ratio;
-
-	return num_samples;
+	return retval * fifo->num_segments * fifo->sample_packing_ratio;
 }
 
 /* query length of fifo */
-- 
2.7.4