[tip:irq/core] ia64: Remove unused check_irq_used()

[tip-bot for Thomas Gleixner]

Commit-ID:  fd5d8abf8bdf9519f40058b5cd24b6ab37b214b4
Gitweb:     http://git.kernel.org/tip/fd5d8abf8bdf9519f40058b5cd24b6ab37b214b4
Author:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Wed, 7 May 2014 15:44:11 +0000
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Fri, 16 May 2014 14:05:20 +0200

ia64: Remove unused check_irq_used()

Just stumbled over it when staring into ia64 irq handling.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Grant Likely <grant.likely@xxxxxxxxxx>
Tested-by: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Link: http://lkml.kernel.org/r/20140507154336.566531793@xxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 arch/ia64/include/asm/hw_irq.h | 1 -
 arch/ia64/kernel/irq_ia64.c    | 8 --------
 2 files changed, 9 deletions(-)

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/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 0884f5e..5774c3b 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;
--
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