MFD: twl4030: convert irq_desc lock to atomic spinlock

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
LKML-Reference: <878wh5friu.fsf@deeprootsystems.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

drivers/mfd/twl4030-irq.c

@@ -458,12 +458,12 @@ static void twl4030_sih_do_edge(struct work_struct *work)
 
 		bytes[byte] &= ~(0x03 << off);
 
-		spin_lock_irq(&d->lock);
+		atomic_spin_lock_irq(&d->lock);
 		if (d->status & IRQ_TYPE_EDGE_RISING)
 			bytes[byte] |= BIT(off + 1);
 		if (d->status & IRQ_TYPE_EDGE_FALLING)
 			bytes[byte] |= BIT(off + 0);
-		spin_unlock_irq(&d->lock);
+		atomic_spin_unlock_irq(&d->lock);
 
 		edge_change &= ~BIT(i);
 	}