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, 4 insertions, 16 deletions

diff --git a/sys/dev/rc/rc.c b/sys/dev/rc/rc.c
index fdcbcf6..8e0fdc5 100644
--- a/sys/dev/rc/rc.c
+++ b/sys/dev/rc/rc.c
@@ -213,6 +213,10 @@ rcprobe(dvp)
 {
 	int             irq = ffs(dvp->id_irq) - 1;
 	register int    nec = dvp->id_iobase;
+	static int once;
+
+	if (!once++)
+		cdevsw_add(&rc_cdevsw);
 
 	if (dvp->id_unit > NRC)
 		return 0;
@@ -1510,20 +1514,4 @@ rc_wait0(nec, unit, chan, line)
 		      unit, chan, line);
 }
 
-static int rc_devsw_installed;
-
-static void 	rc_drvinit(void *unused)
-{
-	dev_t dev;
-
-	if( ! rc_devsw_installed ) {
-		dev = makedev(CDEV_MAJOR, 0);
-		cdevsw_add(&dev,&rc_cdevsw, NULL);
-		rc_devsw_installed = 1;
-    	}
-}
-
-SYSINIT(rcdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,rc_drvinit,NULL)
-
-
 #endif /* NRC */