From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 9 Sep 2014 23:15:59 +0000 (-0700)
Subject: staging: comedi: pcmuio: return void from pcmuio_start_intr()
X-Git-Tag: v3.18-rc1~130^2~490
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=1e2e39effd11ca7c09cc47aff9e99d976109bbe8;p=karo-tx-linux.git

staging: comedi: pcmuio: return void from pcmuio_start_intr()

This function always returns '0' so the comedi_event() is never done by the
callers.

Change the return type to void and remove the comedi_event() dead code.

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/pcmuio.c b/drivers/staging/comedi/drivers/pcmuio.c
index a0d31718a096..d4fe2ec25ecf 100644
--- a/drivers/staging/comedi/drivers/pcmuio.c
+++ b/drivers/staging/comedi/drivers/pcmuio.c
@@ -403,8 +403,8 @@ static irqreturn_t pcmuio_interrupt(int irq, void *d)
 }
 
 /* chip->spinlock is already locked */
-static int pcmuio_start_intr(struct comedi_device *dev,
-			     struct comedi_subdevice *s)
+static void pcmuio_start_intr(struct comedi_device *dev,
+			      struct comedi_subdevice *s)
 {
 	struct pcmuio_private *devpriv = dev->private;
 	int asic = pcmuio_subdevice_to_asic(s);
@@ -433,8 +433,6 @@ static int pcmuio_start_intr(struct comedi_device *dev,
 	/* set pol and enab intrs for this subdev.. */
 	pcmuio_write(dev, pol_bits, asic, PCMUIO_PAGE_POL, 0);
 	pcmuio_write(dev, bits, asic, PCMUIO_PAGE_ENAB, 0);
-
-	return 0;
 }
 
 static int pcmuio_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
@@ -461,7 +459,6 @@ static int pcmuio_inttrig_start_intr(struct comedi_device *dev,
 	int asic = pcmuio_subdevice_to_asic(s);
 	struct pcmuio_asic *chip = &devpriv->asics[asic];
 	unsigned long flags;
-	int event = 0;
 
 	if (trig_num != cmd->start_arg)
 		return -EINVAL;
@@ -469,13 +466,10 @@ static int pcmuio_inttrig_start_intr(struct comedi_device *dev,
 	spin_lock_irqsave(&chip->spinlock, flags);
 	s->async->inttrig = NULL;
 	if (chip->active)
-		event = pcmuio_start_intr(dev, s);
+		pcmuio_start_intr(dev, s);
 
 	spin_unlock_irqrestore(&chip->spinlock, flags);
 
-	if (event)
-		comedi_event(dev, s);
-
 	return 1;
 }
 
@@ -489,7 +483,6 @@ static int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 	int asic = pcmuio_subdevice_to_asic(s);
 	struct pcmuio_asic *chip = &devpriv->asics[asic];
 	unsigned long flags;
-	int event = 0;
 
 	spin_lock_irqsave(&chip->spinlock, flags);
 	chip->active = 1;
@@ -500,13 +493,10 @@ static int pcmuio_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 	if (cmd->start_src == TRIG_INT)
 		s->async->inttrig = pcmuio_inttrig_start_intr;
 	else	/* TRIG_NOW */
-		event = pcmuio_start_intr(dev, s);
+		pcmuio_start_intr(dev, s);
 
 	spin_unlock_irqrestore(&chip->spinlock, flags);
 
-	if (event)
-		comedi_event(dev, s);
-
 	return 0;
 }