From: Wei Yongjun <yjwei@cn.fujitsu.com>
Date: Tue, 9 Mar 2010 06:13:43 +0000 (+0800)
Subject: KVM: PPC: Do not create debugfs if fail to create vcpu
X-Git-Tag: firefly_0821_release~10186^2~1450
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=55d1dfd139e4f3e29e5b417683f48d396c271e73;p=firefly-linux-kernel-4.4.55.git

KVM: PPC: Do not create debugfs if fail to create vcpu

If fail to create the vcpu, we should not create the debugfs
for it.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Alexander Graf <agraf@suse.de>
Cc: stable@kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
(cherry picked from commit 06056bfb944a0302a8f22eb45f09123de7fb417b)
---

diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 2a4551f78f60..ff184f4771e9 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -176,7 +176,8 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
 {
 	struct kvm_vcpu *vcpu;
 	vcpu = kvmppc_core_vcpu_create(kvm, id);
-	kvmppc_create_vcpu_debugfs(vcpu, id);
+	if (!IS_ERR(vcpu))
+		kvmppc_create_vcpu_debugfs(vcpu, id);
 	return vcpu;
 }