diff options
Diffstat (limited to 'sys/i386/isa/cx.c')
| -rw-r--r-- | sys/i386/isa/cx.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/sys/i386/isa/cx.c b/sys/i386/isa/cx.c index f7a53fe..2ee5df8 100644 --- a/sys/i386/isa/cx.c +++ b/sys/i386/isa/cx.c @@ -671,6 +671,19 @@ int cxparam (struct tty *tp, struct termios *t) splx (s); return (0); } + +struct tty *cxdevtotty (dev_t dev) +{ + int unit = UNIT(dev); + + if (unit == UNIT_CTL) + return (NULL); + + if (unit > NCX*NCHAN) + return (NULL); + + return (cxchan[unit]->ttyp); +} int cxselect (dev_t dev, int flag, struct proc *p) { @@ -678,7 +691,11 @@ int cxselect (dev_t dev, int flag, struct proc *p) if (unit == UNIT_CTL) return (0); - return (ttyselect (cxchan[unit]->ttyp, flag, p)); + + if (unit > NCX*NCHAN) + return (ENXIO); + + return (ttyselect(cxchan[unit]->ttyp, flag, p)); } /* |
