From 10a266cae3b21cf36f2df81069c089019486a58b Mon Sep 17 00:00:00 2001
From: Pekka Enberg <penberg@kernel.org>
Date: Sat, 26 Jan 2013 11:36:08 +0200
Subject: [PATCH] kvm tools: Clean up NULL check in pci_shmem__init()

Use idiomatic way of checking for NULL pointer in pci_shmem__init().

Suggested-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---
 hw/pci-shmem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/pci-shmem.c b/hw/pci-shmem.c
index ec3f771..701231a 100644
--- a/hw/pci-shmem.c
+++ b/hw/pci-shmem.c
@@ -54,7 +54,7 @@ static struct msix_table msix_table[2];
 
 int pci_shmem__register_mem(struct shmem_info *si)
 {
-	if (shmem_region == NULL) {
+	if (!shmem_region) {
 		shmem_region = si;
 	} else {
 		pr_warning("only single shmem currently avail. ignoring.\n");