(a) remove the pointer to each driver's tty structure array from cdevsw

(b) add a function callback vector to tty drivers that will return a pointer
    to a valid tty structure based upon a dev_t
(c) make syscons structures the same size whether or not APM is enabled so
    utilities don't crash if NAPM changes (and make the damn kernel compile!)
(d) rewrite /dev/snp ioctl interface so that it is device driver and i386
    independant

1 files changed, 16 insertions, 3 deletions

diff --git a/sys/dev/cy/cy.c b/sys/dev/cy/cy.c
index 3bd203bcb2aa..ff67eb436198 100644
--- a/sys/dev/cy/cy.c
+++ b/sys/dev/cy/cy.c
@@ -27,7 +27,7 @@
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *	$Id: cy.c,v 1.1 1995/02/09 09:47:27 jkh Exp $
+ *	$Id: cy.c,v 1.2 1995/02/15 18:41:41 bde Exp $
  */
 
 /*
@@ -1500,13 +1500,26 @@ cystop(struct tty *tp, int flag)
 	return 0;
 }
 
+struct tty *
+cydevtotty(dev_t dev)
+{
+	u_char unit = UNIT(dev);
+
+	if (unit >= /* NCY * ? */ PORTS_PER_CYCLOM)
+		return NULL;
+
+	return info[unit]->tty;
+}
 
 int
 cyselect(dev_t dev, int rw, struct proc *p)
 {
-	return (ttselect(UNIT(dev), rw, p));
-} /* end of cyselect() */
+	u_char unit = UNIT(dev);
+	if (unit >= /* NCY * ? */ PORTS_PER_CYCLOM)
+		return (ENXIO);
 
+	return (ttyselect(info[unit]->tty, rw, p));
+}
 
 int
 cyspeed(int speed, int *prescaler_io)