[039/111] irq: Add new IRQ flag IRQF_NO_SUSPEND

Commit Message

Greg Kroah-Hartman Aug. 11, 2010, 11:54 p.m. UTC

None

Patch

--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -52,16 +52,21 @@ 
  * IRQF_ONESHOT - Interrupt is not reenabled after the hardirq handler finished.
  *                Used by threaded interrupts which need to keep the
  *                irq line disabled until the threaded handler has been run.
+ * IRQF_NO_SUSPEND - Do not disable this IRQ during suspend
+ *
  */
 #define IRQF_DISABLED		0x00000020
 #define IRQF_SAMPLE_RANDOM	0x00000040
 #define IRQF_SHARED		0x00000080
 #define IRQF_PROBE_SHARED	0x00000100
-#define IRQF_TIMER		0x00000200
+#define __IRQF_TIMER		0x00000200
 #define IRQF_PERCPU		0x00000400
 #define IRQF_NOBALANCING	0x00000800
 #define IRQF_IRQPOLL		0x00001000
 #define IRQF_ONESHOT		0x00002000
+#define IRQF_NO_SUSPEND		0x00004000
+
+#define IRQF_TIMER		(__IRQF_TIMER | IRQF_NO_SUSPEND)
 
 /*
  * Bits used by threaded handlers:
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -200,7 +200,7 @@  static inline int setup_affinity(unsigne
 void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend)
 {
 	if (suspend) {
-		if (!desc->action || (desc->action->flags & IRQF_TIMER))
+		if (!desc->action || (desc->action->flags & IRQF_NO_SUSPEND))
 			return;
 		desc->status |= IRQ_SUSPENDED;
 	}