[tip:x86/apic] x86, irq: Provide empty send_cleanup_vector() stub for UP builds

[tip-bot for Jiang Liu <tipbot@zytor.com>]

Commit-ID:  e32c67e0cbb3921bffe1cc306628c0074d2f43bc
Gitweb:     http://git.kernel.org/tip/e32c67e0cbb3921bffe1cc306628c0074d2f43bc
Author:     Jiang Liu <jiang.liu@linux.intel.com>
AuthorDate: Mon, 27 Oct 2014 16:12:11 +0800
Committer:  Thomas Gleixner <tglx@linutronix.de>
CommitDate: Tue, 16 Dec 2014 14:08:14 +0100

x86, irq: Provide empty send_cleanup_vector() stub for UP builds

Define an empty send_cleanup_vector() for UP kernel to fix link error
of undefined reference, which is used by uv_irq and irq_remapping.

[ tglx: Made it an inline stub and moved it ahead of the file split
  	changes ]

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1414397531-28254-21-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

---
 arch/x86/include/asm/hw_irq.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index 4615906..fa5d1e7 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -153,7 +153,11 @@ struct irq_cfg {
 };
 
 extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
+#ifdef CONFIG_SMP
 extern void send_cleanup_vector(struct irq_cfg *);
+#else
+static inline void send_cleanup_vector(struct irq_cfg *c) { }
+#endif
 
 struct irq_data;
 int __ioapic_set_affinity(struct irq_data *, const struct cpumask *,