genirq: Consolidate disable/enable

Create irq_disable/enable and use them to keep the flags consistent.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

kernel/irq/chip.c

@@ -200,7 +200,7 @@ int irq_startup(struct irq_desc *desc)
 	if (desc->irq_data.chip->irq_startup)
 		return desc->irq_data.chip->irq_startup(&desc->irq_data);
 
-	desc->irq_data.chip->irq_enable(&desc->irq_data);
+	irq_enable(desc);
 	return 0;
 }
 
@@ -211,6 +211,16 @@ void irq_shutdown(struct irq_desc *desc)
 	desc->irq_data.chip->irq_shutdown(&desc->irq_data);
 }
 
+void irq_enable(struct irq_desc *desc)
+{
+	desc->irq_data.chip->irq_enable(&desc->irq_data);
+}
+
+void irq_disable(struct irq_desc *desc)
+{
+	desc->irq_data.chip->irq_disable(&desc->irq_data);
+}
+
 /*
  * default enable function
  */