From: Jesper Nilsson <jesper.nilsson@axis.com>
Date: Tue, 3 Aug 2010 16:50:06 +0000 (+0200)
Subject: CRIS: Check if pointer is set before using it
X-Git-Tag: v2.6.36-rc1~484^2~16
X-Git-Url: http://bbs.cooldavid.org/git/?a=commitdiff_plain;h=243ba2fa461a22e01e5905dd299babeaeeb418e2;p=net-next-2.6.git

CRIS: Check if pointer is set before using it

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
---

diff --git a/arch/cris/include/arch-v32/arch/io.h b/arch/cris/include/arch-v32/arch/io.h
index 72024452cea..adc5484351b 100644
--- a/arch/cris/include/arch-v32/arch/io.h
+++ b/arch/cris/include/arch-v32/arch/io.h
@@ -46,10 +46,12 @@ static inline void crisv32_io_set(struct crisv32_iopin *iopin, int val)
 	unsigned long flags;
 	spin_lock_irqsave(&iopin->port->lock, flags);
 
-	if (val)
-		*iopin->port->data |= iopin->bit;
-	else
-		*iopin->port->data &= ~iopin->bit;
+	if (iopin->port->data) {
+		if (val)
+			*iopin->port->data |= iopin->bit;
+		else
+			*iopin->port->data &= ~iopin->bit;
+	}
 
 	spin_unlock_irqrestore(&iopin->port->lock, flags);
 }
@@ -60,10 +62,12 @@ static inline void crisv32_io_set_dir(struct crisv32_iopin* iopin,
 	unsigned long flags;
 	spin_lock_irqsave(&iopin->port->lock, flags);
 
-	if (dir == crisv32_io_dir_in)
-		*iopin->port->oe &= ~iopin->bit;
-	else
-		*iopin->port->oe |= iopin->bit;
+	if (iopin->port->oe) {
+		if (dir == crisv32_io_dir_in)
+			*iopin->port->oe &= ~iopin->bit;
+		else
+			*iopin->port->oe |= iopin->bit;
+	}
 
 	spin_unlock_irqrestore(&iopin->port->lock, flags);
 }