From 7db067bef7cf237f658d4bb25306292b64d34952 Mon Sep 17 00:00:00 2001
From: Yang Bai <hamo.by@gmail.com>
Date: Fri, 10 Feb 2012 17:55:36 +0800
Subject: [PATCH] kvm tools: ensure kvm_ipc__register_handler success

By checking the return value from kvm_ipc__register_handler,
we can ensure that it succeeds.

Signed-off-by: Yang Bai <hamo.by@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---
 kvm.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/kvm.c b/kvm.c
index f02d5df..99bcef4 100644
--- a/kvm.c
+++ b/kvm.c
@@ -396,10 +396,16 @@ struct kvm *kvm__init(const char *kvm_dev, const char *hugetlbfs_path, u64 ram_s
 		goto err_vm_fd;
 	}
 
-	kvm_ipc__register_handler(KVM_IPC_PID, kvm__pid);
+	ret = kvm_ipc__register_handler(KVM_IPC_PID, kvm__pid);
+	if (ret < 0) {
+		pr_err("Register ipc handler failed.");
+		goto err_ipc;
+	}
 
 	return kvm;
 
+err_ipc:
+	kvm_ipc__stop();
 err_vm_fd:
 	close(kvm->vm_fd);
 err_sys_fd: