[PATCH] genirq: core

Core genirq support: add the irq-chip and irq-flow abstractions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 1a2e7663096a..b61784ee78b2 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -153,6 +153,17 @@ int can_request_irq(unsigned int irq, unsigned long irqflags)
         return !action;
 }
 
+void compat_irq_chip_set_default_handler(struct irq_desc *desc)
+{
+        /*
+         * If the architecture still has not overriden
+         * the flow handler then zap the default. This
+         * should catch incorrect flow-type setting.
+         */
+        if (desc->handle_irq == &handle_bad_irq)
+                desc->handle_irq = NULL;
+}
+
 /*
  * Internal function to register an irqaction - typically used to
  * allocate special interrupts that are part of the architecture.
@@ -217,6 +228,9 @@ int setup_irq(unsigned int irq, struct irqaction *new)
                 desc->status |= IRQ_PER_CPU;
 #endif
         if (!shared) {
+                irq_chip_set_defaults(desc->chip);
+                compat_irq_chip_set_default_handler(desc);
+
                 desc->status &= ~(IRQ_AUTODETECT | IRQ_WAITING |
                                   IRQ_INPROGRESS);