From 5851f60ba43e58390ea421c463efeba1efc90567 Mon Sep 17 00:00:00 2001
From: H Hartley Sweeten <hartleys@visionengravers.com>
Date: Tue, 10 Jul 2012 16:55:04 -0700
Subject: [PATCH] --- yaml --- r: 317911 b: refs/heads/master c:
 4c977b86b123e0ae1da8bf25b00125443fd514c9 h: refs/heads/master i:   317909:
 d1eea3e7b96ee36dea4173ed1cc80399015f2884   317907:
 061aa793ceaa1c7af3521ccf628bd85b78b51530   317903:
 463e4eb944396b74506d5e4d43055029858cdbc9 v: v3

---
 [refs]                                        |  2 +-
 trunk/drivers/staging/comedi/drivers/rtd520.c | 21 +++++++++----------
 2 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/[refs] b/[refs]
index f146df18cbe9..7b78881589f9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9d8ed35d02c54282eef1f14523aec78551b56e49
+refs/heads/master: 4c977b86b123e0ae1da8bf25b00125443fd514c9
diff --git a/trunk/drivers/staging/comedi/drivers/rtd520.c b/trunk/drivers/staging/comedi/drivers/rtd520.c
index 07260cda4197..3c501ca33787 100644
--- a/trunk/drivers/staging/comedi/drivers/rtd520.c
+++ b/trunk/drivers/staging/comedi/drivers/rtd520.c
@@ -406,10 +406,6 @@ struct rtdPrivate {
 
 /* Macros to access registers */
 
-/* Interrupt overrun status */
-#define RtdInterruptOverrunStatus(dev) \
-	readl(devpriv->las0+LAS0_OVERRUN)
-
 /* Interrupt overrun clear */
 #define RtdInterruptOverrunClear(dev) \
 	writel(0, devpriv->las0+LAS0_OVERRUN)
@@ -1013,9 +1009,10 @@ static irqreturn_t rtd_interrupt(int irq,	/* interrupt number (ignored) */
 				 void *d)
 {				/* our data *//* cpu context (ignored) */
 	struct comedi_device *dev = d;	/* must be called "dev" for devpriv */
+	struct comedi_subdevice *s = dev->subdevices + 0;	/* analog in subdevice */
+	u32 overrun;
 	u16 status;
 	u16 fifoStatus;
-	struct comedi_subdevice *s = dev->subdevices + 0;	/* analog in subdevice */
 
 	if (!dev->attached)
 		return IRQ_NONE;
@@ -1112,10 +1109,11 @@ static irqreturn_t rtd_interrupt(int irq,	/* interrupt number (ignored) */
 		DPRINTK("rtd520: unknown interrupt source!\n");
 	}
 
-	if (0xffff & RtdInterruptOverrunStatus(dev)) {	/* interrupt overrun */
+	overrun = readl(devpriv->las0 + LAS0_OVERRUN) & 0xffff;
+	if (overrun) {
 		DPRINTK
 		    ("rtd520: Interrupt overrun with %ld to go! over_status=0x%x\n",
-		     devpriv->aiCount, 0xffff & RtdInterruptOverrunStatus(dev));
+		     devpriv->aiCount, overrun);
 		goto abortTransfer;
 	}
 
@@ -1167,10 +1165,10 @@ static irqreturn_t rtd_interrupt(int irq,	/* interrupt number (ignored) */
 	readw(devpriv->las0 + LAS0_CLEAR);
 
 	fifoStatus = readl(devpriv->las0 + LAS0_ADC);
+	overrun = readl(devpriv->las0 + LAS0_OVERRUN) & 0xffff;
 	DPRINTK
 	    ("rtd520: Acquisition complete. %ld ints, intStat=%x, overStat=%x\n",
-	     devpriv->intCount, status,
-	     0xffff & RtdInterruptOverrunStatus(dev));
+	     devpriv->intCount, status, overrun);
 
 	return IRQ_HANDLED;
 }
@@ -1603,6 +1601,7 @@ 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)
 {
+	u32 overrun;
 	u16 status;
 
 	writel(0, devpriv->las0 + LAS0_PACER_STOP);
@@ -1620,10 +1619,10 @@ static int rtd_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
 	}
 #endif /* USE_DMA */
 	status = readw(devpriv->las0 + LAS0_IT);
+	overrun = readl(devpriv->las0 + LAS0_OVERRUN) & 0xffff;
 	DPRINTK
 	    ("rtd520: Acquisition canceled. %ld ints, intStat=%x, overStat=%x\n",
-	     devpriv->intCount, status,
-	     0xffff & RtdInterruptOverrunStatus(dev));
+	     devpriv->intCount, status, overrun);
 	return 0;
 }