fix for close bug in tablet driver (from dagobah!bill)

SCCS-vsn: sys/kern/tty_tb.c 6.2

diff --git a/usr/src/sys/kern/tty_tb.c b/usr/src/sys/kern/tty_tb.c
index e79560a..62f125c 100644 (file)
--- a/usr/src/sys/kern/tty_tb.c
+++ b/usr/src/sys/kern/tty_tb.c
@@ -1,4 +1,4 @@
-/*     tty_tb.c        6.1     83/08/13        */
+/*     tty_tb.c        6.2     83/09/22        */

 
 #include "tb.h"
 #if NTB > 0
 
 #include "tb.h"
 #if NTB > 0


@@ -77,11 +77,12 @@ tbclose(tp)
 {
        register int s = spl5();
 
 {
        register int s = spl5();
 

+       ((struct tb *) tp->T_LINEP)->used = 0;

        tp->t_cp = 0;
        tp->t_inbuf = 0;
        tp->t_rawq.c_cc = 0;            /* clear queues -- paranoid */
        tp->t_canq.c_cc = 0;
        tp->t_cp = 0;
        tp->t_inbuf = 0;
        tp->t_rawq.c_cc = 0;            /* clear queues -- paranoid */
        tp->t_canq.c_cc = 0;

-       tp->t_line = 0;         /* paranoid: avoid races */
+       tp->t_line = 0;                 /* paranoid: avoid races */

        splx(s);
 }
 
        splx(s);
 }
 


@@ -94,8 +95,6 @@ tbread(tp, uio)
        register struct tty *tp;
        struct uio *uio;
 {
        register struct tty *tp;
        struct uio *uio;
 {

-       register int i;
-       register s;

        struct tbpos *tbpos;
 
        if ((tp->t_state&TS_CARR_ON)==0)
        struct tbpos *tbpos;
 
        if ((tp->t_state&TS_CARR_ON)==0)