Commit 7a55713a authored by Ingo Molnar's avatar Ingo Molnar Committed by Linus Torvalds
Browse files

[PATCH] genirq: add handle_bad_irq() 



Handle bad IRQ vectors via the irqchip mechanism.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent dd87eb3a

kernel/irq/autoprobe.c

+8 −0
Original line number Diff line number Diff line
@@ -11,6 +11,8 @@ 
#include <linux/interrupt.h>

#include <linux/delay.h>



#include "internals.h"



/*

 * Autodetection depends on the fact that any interrupt that

 * comes in on to an unassigned handler will get stuck with
@@ -41,6 +43,12 @@ unsigned long probe_irq_on(void) 


		spin_lock_irq(&desc->lock);

		if (!desc->action && !(desc->status & IRQ_NOPROBE)) {

			/*

			 * An old-style architecture might still have

			 * the handle_bad_irq handler there:

			 */

			compat_irq_chip_set_default_handler(desc);



			/*

			 * Some chips need to know about probing in

			 * progress:

kernel/irq/handle.c

+1 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned = { 
	[0 ... NR_IRQS-1] = {

		.status = IRQ_DISABLED,

		.chip = &no_irq_type,

		.handle_irq = handle_bad_irq,

		.depth = 1,

		.lock = SPIN_LOCK_UNLOCKED,

#ifdef CONFIG_SMP