linux-kernel - [PATCH] x86/kvm: Fix -Wmissing-prototypes warnings

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Date:   Thu, 10 Oct 2019 14:37:25 +0800
From:   Yi Wang <wang.yi59@....com.cn>
To:     pbonzini@...hat.com
Cc:     rkrcmar@...hat.com, sean.j.christopherson@...el.com,
        vkuznets@...hat.com, wanpengli@...cent.com, jmattson@...gle.com,
        joro@...tes.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, hpa@...or.com, x86@...nel.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, xue.zhihong@....com.cn,
        wang.yi59@....com.cn, up2wing@...il.com, wang.liang82@....com.cn
Subject: [PATCH] x86/kvm: Fix -Wmissing-prototypes warnings

We get two warning when build kernel with W=1:
arch/x86/kernel/kvm.c:872:6: warning: no previous prototype for ‘arch_haltpoll_enable’ [-Wmissing-prototypes]
arch/x86/kernel/kvm.c:885:6: warning: no previous prototype for ‘arch_haltpoll_disable’ [-Wmissing-prototypes]

Including the missing head file can fix this.

Signed-off-by: Yi Wang <wang.yi59@....com.cn>
---
 arch/x86/kernel/kvm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index e820568..32ef1ee 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -33,6 +33,7 @@
 #include <asm/apicdef.h>
 #include <asm/hypervisor.h>
 #include <asm/tlb.h>
+#include <asm/cpuidle_haltpoll.h>
 
 static int kvmapf = 1;
 
-- 
1.8.3.1