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
  */

kernel/irq/internals.h

@@ -40,6 +40,8 @@ extern void __enable_irq(struct irq_desc *desc, unsigned int irq, bool resume);
 
 extern int irq_startup(struct irq_desc *desc);
 extern void irq_shutdown(struct irq_desc *desc);
+extern void irq_enable(struct irq_desc *desc);
+extern void irq_disable(struct irq_desc *desc);
 
 extern void init_kstat_irqs(struct irq_desc *desc, int node, int nr);
 

kernel/irq/manage.c

@@ -331,7 +331,7 @@ void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend)
 
 	if (!desc->depth++) {
 		desc->status |= IRQ_DISABLED;
-		desc->irq_data.chip->irq_disable(&desc->irq_data);
+		irq_disable(desc);
 	}
 }
 

kernel/irq/resend.c

@@ -55,20 +55,20 @@ static DECLARE_TASKLET(resend_tasklet, resend_irqs, 0);
  */
 void check_irq_resend(struct irq_desc *desc, unsigned int irq)
 {
-	unsigned int status = desc->status;
-
 	/*
 	 * Make sure the interrupt is enabled, before resending it:
 	 */
-	desc->irq_data.chip->irq_enable(&desc->irq_data);
+	irq_enable(desc);
 
 	/*
 	 * We do not resend level type interrupts. Level type
 	 * interrupts are resent by hardware when they are still
 	 * active.
 	 */
-	if ((status & (IRQ_LEVEL | IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
-		desc->status = (status & ~IRQ_PENDING) | IRQ_REPLAY;
+	if (desc->status & IRQ_LEVEL)
+		return;
+	if ((desc->status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
+		desc->status = (desc->status & ~IRQ_PENDING) | IRQ_REPLAY;
 
 		if (!desc->irq_data.chip->irq_retrigger ||
 		    !desc->irq_data.chip->irq_retrigger(&desc->irq_data)) {

kernel/irq/spurious.c

@@ -303,7 +303,7 @@ void note_interrupt(unsigned int irq, struct irq_desc *desc,
 		printk(KERN_EMERG "Disabling IRQ #%d\n", irq);
 		desc->status |= IRQ_DISABLED | IRQ_SPURIOUS_DISABLED;
 		desc->depth++;
-		desc->irq_data.chip->irq_disable(&desc->irq_data);
+		irq_disable(desc);
 
 		mod_timer(&poll_spurious_irq_timer,
 			  jiffies + POLL_SPURIOUS_IRQ_INTERVAL);