misc: Fix allocation 'borrowed' by vhost_net

commit 79907d89c3 upstream.

10, 233 is allocated officially to /dev/kmview which is shipping in
Ubuntu and Debian distributions.  vhost_net seem to have borrowed it
without making a proper request and this causes regressions in the other
distributions.

vhost_net can use a dynamic minor so use that instead.  Also update the
file with a comment to try and avoid future misunderstandings.

Signed-off-by: Alan Cox <device@lanana.org>
[ We should have caught this before 2.6.34 got released.  - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/vhost/net.c

@@ -637,7 +637,7 @@ const static struct file_operations vhost_net_fops = {
 };
 
 static struct miscdevice vhost_net_misc = {
-	VHOST_NET_MINOR,
+	MISC_DYNAMIC_MINOR,
 	"vhost-net",
 	&vhost_net_fops,
 };

include/linux/miscdevice.h

@@ -3,6 +3,12 @@
 #include <linux/module.h>
 #include <linux/major.h>
 
+/*
+ *	These allocations are managed by device@lanana.org. If you use an
+ *	entry that is not in assigned your entry may well be moved and
+ *	reassigned, or set dynamic if a fixed value is not justified.
+ */
+
 #define PSMOUSE_MINOR		1
 #define MS_BUSMOUSE_MINOR	2
 #define ATIXL_BUSMOUSE_MINOR	3
@@ -30,7 +36,6 @@
 #define HPET_MINOR		228
 #define FUSE_MINOR		229
 #define KVM_MINOR		232
-#define VHOST_NET_MINOR		233
 #define MISC_DYNAMIC_MINOR	255
 
 struct device;