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.

2 files changed, 3 insertions, 7 deletions

diff --git a/sys/net/bpf.c b/sys/net/bpf.c
index 40d3609..a564935 100644
--- a/sys/net/bpf.c
+++ b/sys/net/bpf.c
@@ -37,7 +37,7 @@
  *
  *      @(#)bpf.c	8.2 (Berkeley) 3/28/94
  *
- * $Id: bpf.c,v 1.49 1999/04/28 11:37:30 phk Exp $
+ * $Id: bpf.c,v 1.50 1999/05/30 16:53:04 phk Exp $
  */
 
 #include "bpfilter.h"
@@ -1306,14 +1306,12 @@ static void
 bpf_drvinit(unused)
 	void *unused;
 {
-	dev_t dev;
 #ifdef DEVFS
 	int i;
 #endif
 
 	if( ! bpf_devsw_installed ) {
-		dev = makedev(CDEV_MAJOR, 0);
-		cdevsw_add(&dev,&bpf_cdevsw, NULL);
+		cdevsw_add(&bpf_cdevsw);
 		bpf_devsw_installed = 1;
 #ifdef DEVFS
 
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