By adding the correct module alias, programs won't have to explicitly
call modprobe. Vhost-net will always be available if built into the kernel.
It does require assigning a permanent minor number for depmod to work.
Choose one next to TUN since this driver is related to it.

Also, use C99 style initialization.

Signed-off-by: Stephen Hemminger <redacted>

---
v2 - document minor number and make sure to not overlap

 Documentation/devices.txt  |    2 ++
 drivers/vhost/net.c        |    8 +++++---
 include/linux/miscdevice.h |    1 +
 3 files changed, 8 insertions(+), 3 deletions(-)

--- a/drivers/vhost/net.c       2012-01-10 10:56:58.883179194 -0800
+++ b/drivers/vhost/net.c       2012-01-10 19:48:23.650225892 -0800

@@ -856,9 +856,9 @@ static const struct file_operations vhos

 };

 static struct miscdevice vhost_net_misc = {
-       MISC_DYNAMIC_MINOR,
-       "vhost-net",
-       &vhost_net_fops,
+       .minor = VHOST_NET_MINOR,
+       .name = "vhost-net",
+       .fops = &vhost_net_fops,
 };

 static int vhost_net_init(void)

@@ -879,3 +879,5 @@ MODULE_VERSION("0.0.1");

 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Michael S. Tsirkin");
 MODULE_DESCRIPTION("Host kernel accelerator for virtio net");
+MODULE_ALIAS_MISCDEV(VHOST_NET_MINOR);
+MODULE_ALIAS("devname:vhost-net");

--- a/include/linux/miscdevice.h        2012-01-10 10:56:59.779189436 -0800
+++ b/include/linux/miscdevice.h        2012-01-11 09:13:20.803694316 -0800

@@ -42,6 +42,7 @@

 #define AUTOFS_MINOR           235
 #define MAPPER_CTRL_MINOR      236
 #define LOOP_CTRL_MINOR                237
+#define VHOST_NET_MINOR                238
 #define MISC_DYNAMIC_MINOR     255

 struct device;

--- a/Documentation/devices.txt 2012-01-10 10:56:53.399116518 -0800
+++ b/Documentation/devices.txt 2012-01-11 09:12:49.251197653 -0800

@@ -447,6 +447,8 @@ Your cooperation is appreciated.

               234 = /dev/btrfs-control        Btrfs control device
               235 = /dev/autofs       Autofs control device
               236 = /dev/mapper/control       Device-Mapper control device
+               237 = /dev/vhost-net    Host kernel accelerator for virtio net
+