genirq: fix irq_desc->depth handling with DEBUG_SHIRQ

[linux-2.6-omap-h63xx.git] / kernel / irq / manage.c

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 77a51be360103c98c8ce3a165668ea423f69d119..ae1b684e048cf6f822eb9db6a002c28c5fa48314 100644 (file)
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -596,26 +596,29 @@ int request_irq(unsigned int irq, irq_handler_t handler,
        action->next = NULL;
        action->dev_id = dev_id;
 
+       retval = setup_irq(irq, action);
+       if (retval)
+               kfree(action);
+
 #ifdef CONFIG_DEBUG_SHIRQ
        if (irqflags & IRQF_SHARED) {
                /*
                 * It's a shared IRQ -- the driver ought to be prepared for it
                 * to happen immediately, so let's make sure....
-                * We do this before actually registering it, to make sure that
-                * a 'real' IRQ doesn't run in parallel with our fake
+                * We disable the irq to make sure that a 'real' IRQ doesn't
+                * run in parallel with our fake.
                 */
                unsigned long flags;
 
+               disable_irq(irq);
                local_irq_save(flags);
+
                handler(irq, dev_id);
+
                local_irq_restore(flags);
+               enable_irq(irq);
        }
 #endif
-
-       retval = setup_irq(irq, action);
-       if (retval)
-               kfree(action);
-
        return retval;
 }
 EXPORT_SYMBOL(request_irq);