genirq: Remove real old transition functions

These transition helpers are stale for years now. Remove them.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

4 files changed, 5 insertions, 34 deletions

diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c
index c8bbc4fabaab..394784c57060 100644
--- a/kernel/irq/autoprobe.c
+++ b/kernel/irq/autoprobe.c
@@ -47,12 +47,6 @@ unsigned long probe_irq_on(void)
                 raw_spin_lock_irq(&desc->lock);
                 if (!desc->action && irq_settings_can_probe(desc)) {
                         /*
-                         * 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:
                          */
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 2b0f9192a830..c19c0b562c80 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -644,19 +644,11 @@ __set_irq_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
                 return;
         }
 
-        if (!handle)
+        if (!handle) {
                 handle = handle_bad_irq;
-        else if (desc->irq_data.chip == &no_irq_chip) {
-                printk(KERN_WARNING "Trying to install %sinterrupt handler "
-                       "for IRQ%d\n", is_chained ? "chained " : "", irq);
-                /*
-                 * Some ARM implementations install a handler for really dumb
-                 * interrupt hardware without setting an irq_chip. This worked
-                 * with the ARM no_irq_chip but the check in setup_irq would
-                 * prevent us to setup the interrupt at all. Switch it to
-                 * dummy_irq_chip for easy transition.
-                 */
-                desc->irq_data.chip = &dummy_irq_chip;
+        } else {
+                if (WARN_ON(desc->irq_data.chip == &no_irq_chip))
+                        return;
         }
 
         chip_bus_lock(desc);
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index fd5777ab2d34..f80a77471617 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -74,9 +74,6 @@ enum {
 /* Set default functions for irq_chip structures: */
 extern void irq_chip_set_defaults(struct irq_chip *chip);
 
-/* Set default handler: */
-extern void compat_irq_chip_set_default_handler(struct irq_desc *desc);
-
 extern int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
                 unsigned long flags);
 extern void __disable_irq(struct irq_desc *desc, unsigned int irq, bool susp);
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index ea6add6036b1..99395a24f432 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -540,17 +540,6 @@ 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;
-}
-
 int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
                       unsigned long flags)
 {
@@ -912,8 +901,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 
                         if (ret)
                                 goto out_mask;
-                } else
-                        compat_irq_chip_set_default_handler(desc);
+                }
 
                 desc->istate &= ~(IRQS_AUTODETECT | IRQS_SPURIOUS_DISABLED | \
                                   IRQS_INPROGRESS | IRQS_ONESHOT | \