CRIS: Check if pointer is set before using it

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

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 (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 (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);
 }