linux-kernel - [PATCH] staging: comedi: drivers: rtd520: Removed variables that is never used

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Message-Id: <1422484698-9539-1-git-send-email-rickard_strandqvist@spectrumdigital.se>
Date:	Wed, 28 Jan 2015 23:38:17 +0100
From:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To:	Ian Abbott <abbotti@....co.uk>,
	H Hartley Sweeten <hsweeten@...ionengravers.com>
Cc:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH] staging: comedi: drivers: rtd520: Removed variables that is never used

Variable ar assigned a value that is never used.
I have also removed all the code that thereby serves no purpose.

This was found using a static code analysis program called cppcheck

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
---
 drivers/staging/comedi/drivers/rtd520.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/comedi/drivers/rtd520.c b/drivers/staging/comedi/drivers/rtd520.c
index 581aa58..305631c 100644
--- a/drivers/staging/comedi/drivers/rtd520.c
+++ b/drivers/staging/comedi/drivers/rtd520.c
@@ -1031,8 +1031,6 @@ static int rtd_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 static int rtd_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
 {
 	struct rtd_private *devpriv = dev->private;
-	u32 overrun;
-	u16 status;
 
 	/* pacer stop source: SOFTWARE */
 	writel(0, dev->mmio + LAS0_PACER_STOP);
@@ -1040,8 +1038,8 @@ static int rtd_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
 	writel(0, dev->mmio + LAS0_ADC_CONVERSION);
 	writew(0, dev->mmio + LAS0_IT);
 	devpriv->ai_count = 0;	/* stop and don't transfer any more */
-	status = readw(dev->mmio + LAS0_IT);
-	overrun = readl(dev->mmio + LAS0_OVERRUN) & 0xffff;
+	readw(dev->mmio + LAS0_IT);
+	readl(dev->mmio + LAS0_OVERRUN) & 0xffff;
 	writel(0, dev->mmio + LAS0_ADC_FIFO_CLEAR);
 	return 0;
 }
-- 
1.7.10.4

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