Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next

Pull core irq updates from Thomas Gleixner:
 "The irq department delivers:

   - Another tree wide update to get rid of the horrible create_irq
     interface along with its even more horrible variants.  That also
     gets rid of the last leftovers of the initial sparse irq hackery.
     arch/driver specific changes have been either acked or ignored.

   - A fix for the spurious interrupt detection logic with threaded
     interrupts.

   - A new ARM SoC interrupt controller

   - The usual pile of fixes and improvements all over the place"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
  Documentation: brcmstb-l2: Add Broadcom STB Level-2 interrupt controller binding
  irqchip: brcmstb-l2: Add Broadcom Set Top Box Level-2 interrupt controller
  genirq: Improve documentation to match current implementation
  ARM: iop13xx: fix msi support with sparse IRQ
  genirq: Provide !SMP stub for irq_set_affinity_notifier()
  irqchip: armada-370-xp: Move the devicetree binding documentation
  irqchip: gic: Use mask field in GICC_IAR
  genirq: Remove dynamic_irq mess
  ia64: Use irq_init_desc
  genirq: Replace dynamic_irq_init/cleanup
  genirq: Remove irq_reserve_irq[s]
  genirq: Replace reserve_irqs in core code
  s390: Avoid call to irq_reserve_irqs()
  s390: Remove pointless arch_show_interrupts()
  s390: pci: Check return value of alloc_irq_desc() proper
  sh: intc: Remove pointless irq_reserve_irqs() invocation
  x86, irq: Remove pointless irq_reserve_irqs() call
  genirq: Make create/destroy_irq() ia64 private
  tile: Use SPARSE_IRQ
  tile: pci: Use irq_alloc/free_hwirq()
  ...

6 files changed, 10 insertions, 14 deletions

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 12c3afe..2f3abcf 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -32,6 +32,7 @@ config IA64
 	select GENERIC_IRQ_PROBE
 	select GENERIC_PENDING_IRQ if SMP
 	select GENERIC_IRQ_SHOW
+	select GENERIC_IRQ_LEGACY
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
 	select GENERIC_IOMAP
diff --git a/arch/ia64/include/asm/hw_irq.h b/arch/ia64/include/asm/hw_irq.h
index a681d02..029bab3 100644
--- a/arch/ia64/include/asm/hw_irq.h
+++ b/arch/ia64/include/asm/hw_irq.h
@@ -132,7 +132,6 @@ extern int reserve_irq_vector (int vector);
 extern void __setup_vector_irq(int cpu);
 extern void ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect);
 extern void ia64_native_register_percpu_irq (ia64_vector vec, struct irqaction *action);
-extern int check_irq_used (int irq);
 extern void destroy_and_reserve_irq (unsigned int irq);
 
 #if defined(CONFIG_SMP) && (defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_DIG))
diff --git a/arch/ia64/include/asm/irq.h b/arch/ia64/include/asm/irq.h
index 91b920fd..820667c 100644
--- a/arch/ia64/include/asm/irq.h
+++ b/arch/ia64/include/asm/irq.h
@@ -31,4 +31,7 @@ bool is_affinity_mask_valid(const struct cpumask *cpumask);
 
 #define is_affinity_mask_valid is_affinity_mask_valid
 
+int create_irq(void);
+void destroy_irq(unsigned int irq);
+
 #endif /* _ASM_IA64_IRQ_H */
diff --git a/arch/ia64/include/asm/irq_remapping.h b/arch/ia64/include/asm/irq_remapping.h
index a8687b1..e3b3556 100644
--- a/arch/ia64/include/asm/irq_remapping.h
+++ b/arch/ia64/include/asm/irq_remapping.h
@@ -1,4 +1,6 @@
 #ifndef __IA64_INTR_REMAPPING_H
 #define __IA64_INTR_REMAPPING_H
 #define irq_remapping_enabled 0
+#define dmar_alloc_hwirq	create_irq
+#define dmar_free_hwirq		destroy_irq
 #endif
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 19f107b..cd44a57 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -735,7 +735,7 @@ iosapic_register_intr (unsigned int gsi,
 		rte = find_rte(irq, gsi);
 		if(iosapic_intr_info[irq].count == 0) {
 			assign_irq_vector(irq);
-			dynamic_irq_init(irq);
+			irq_init_desc(irq);
 		} else if (rte->refcnt != NO_REF_RTE) {
 			rte->refcnt++;
 			goto unlock_iosapic_lock;
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 0884f5e..03ea78e 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -93,14 +93,6 @@ static int irq_status[NR_IRQS] = {
 	[0 ... NR_IRQS -1] = IRQ_UNUSED
 };
 
-int check_irq_used(int irq)
-{
-	if (irq_status[irq] == IRQ_USED)
-		return 1;
-
-	return -1;
-}
-
 static inline int find_unassigned_irq(void)
 {
 	int irq;
@@ -390,8 +382,7 @@ void destroy_and_reserve_irq(unsigned int irq)
 {
 	unsigned long flags;
 
-	dynamic_irq_cleanup(irq);
-
+	irq_init_desc(irq);
 	spin_lock_irqsave(&vector_lock, flags);
 	__clear_irq_vector(irq);
 	irq_status[irq] = IRQ_RSVD;
@@ -424,13 +415,13 @@ int create_irq(void)
  out:
 	spin_unlock_irqrestore(&vector_lock, flags);
 	if (irq >= 0)
-		dynamic_irq_init(irq);
+		irq_init_desc(irq);
 	return irq;
 }
 
 void destroy_irq(unsigned int irq)
 {
-	dynamic_irq_cleanup(irq);
+	irq_init_desc(irq);
 	clear_irq_vector(irq);
 }