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, 5 insertions, 16 deletions

diff --git a/sys/i386/isa/mcd.c b/sys/i386/isa/mcd.c
index c57a675..17e9b0c 100644
--- a/sys/i386/isa/mcd.c
+++ b/sys/i386/isa/mcd.c
@@ -40,7 +40,7 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *	$Id: mcd.c,v 1.106 1999/05/08 07:02:30 phk Exp $
+ *	$Id: mcd.c,v 1.107 1999/05/30 16:52:19 phk Exp $
  */
 static const char COPYRIGHT[] = "mcd-driver (C)1993 by H.Veit & B.Moore";
 
@@ -756,6 +756,10 @@ mcd_probe(struct isa_device *dev)
 	int unit = dev->id_unit;
 	int i, j;
 	unsigned char stbytes[3];
+	static int once;
+
+	if (!once++)
+		cdevsw_add(&mcd_cdevsw);
 
 	mcd_data[unit].flags = MCDPROBING;
 
@@ -1856,19 +1860,4 @@ mcd_resume(int unit)
 	return mcd_play(unit, &cd->lastpb);
 }
 
-
-static int mcd_devsw_installed;
-
-static void 	mcd_drvinit(void *unused)
-{
-
-	if( ! mcd_devsw_installed ) {
-		cdevsw_add_generic(BDEV_MAJOR,CDEV_MAJOR, &mcd_cdevsw);
-		mcd_devsw_installed = 1;
-    	}
-}
-
-SYSINIT(mcddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,mcd_drvinit,NULL)
-
-
 #endif /* NMCD > 0 */