[PATCH 2/2] kvm tools: change option type of RNG from increment to boolean

[Liming Wang <walimisdev@gmail.com>]

Becasue virtio random generator is a single device, change its option
type to boolean.

Signed-off-by: Liming Wang <walimisdev@gmail.com>
---
 tools/kvm/builtin-run.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/tools/kvm/builtin-run.c b/tools/kvm/builtin-run.c
index 2816774..646ba21 100644
--- a/tools/kvm/builtin-run.c
+++ b/tools/kvm/builtin-run.c
@@ -60,7 +60,7 @@ __thread struct kvm_cpu *current_kvm_cpu;
 
 static u64 ram_size;
 static u8  image_count;
-static int virtio_rng;
+static bool virtio_rng;
 static const char *kernel_cmdline;
 static const char *kernel_filename;
 static const char *vmlinux_filename;
@@ -161,7 +161,7 @@ static const struct option options[] = {
 	OPT_BOOLEAN('\0', "balloon", &balloon, "Enable virtio balloon"),
 	OPT_BOOLEAN('\0', "vnc", &vnc, "Enable VNC framebuffer"),
 	OPT_BOOLEAN('\0', "sdl", &sdl, "Enable SDL framebuffer"),
-	OPT_INCR('\0', "rng", &virtio_rng, "Enable virtio Random Number Generator"),
+	OPT_BOOLEAN('\0', "rng", &virtio_rng, "Enable virtio Random Number Generator"),
 	OPT_CALLBACK('\0', "9p", NULL, "dir_to_share,tag_name",
 		     "Enable virtio 9p to share files between host and guest", virtio_9p_rootdir_parser),
 	OPT_STRING('\0', "console", &console, "serial or virtio",
@@ -641,8 +641,7 @@ int kvm_cmd_run(int argc, const char **argv, const char *prefix)
 		virtio_console__init(kvm);
 
 	if (virtio_rng)
-		while (virtio_rng--)
-			virtio_rng__init(kvm);
+		virtio_rng__init(kvm);
 
 	if (balloon)
 		virtio_bln__init(kvm);
-- 
1.7.0.4