Simplify cdevsw registration.

The cdevsw_add() function now finds the major number(s) in the
struct cdevsw passed to it.  cdevsw_add_generic() is no longer
needed, cdevsw_add() does the same thing.

cdevsw_add() will print an message if the d_maj field looks bogus.

Remove nblkdev and nchrdev variables.  Most places they were used
bogusly.  Instead check a dev_t for validity by seeing if devsw()
or bdevsw() returns NULL.

Move bdevsw() and devsw() functions to kern/kern_conf.c

Bump __FreeBSD_version to 400006

This commit removes:
        72 bogus makedev() calls
        26 bogus SYSINIT functions

if_xe.c bogusly accessed cdevsw[], author/maintainer please fix.

I4b and vinum not changed.  Patches emailed to authors.  LINT
probably broken until they catch up.

1 files changed, 1 insertions, 3 deletions

diff --git a/sys/net/if_tun.c b/sys/net/if_tun.c
index 071e628..caff2d4 100644
--- a/sys/net/if_tun.c
+++ b/sys/net/if_tun.c
@@ -121,12 +121,10 @@ tunattach(dummy)
 {
 	register int i;
 	struct ifnet *ifp;
-	dev_t dev;
 
 	if ( tun_devsw_installed )
 		return;
-	dev = makedev(CDEV_MAJOR, 0);
-	cdevsw_add(&dev, &tun_cdevsw, NULL);
+	cdevsw_add(&tun_cdevsw);
 	tun_devsw_installed = 1;
 	for ( i = 0; i < NTUN; i++ ) {
 #ifdef DEVFS