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MFpc98: Check a pointer is NULL, remove unused variable.

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This commit is contained in:
nyan 2004-09-20 13:55:26 +00:00
parent 9d5a60849a
commit 7851aaef72
1 changed files with 4 additions and 3 deletions
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7
sys/dev/sio/sio.c
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@ -393,6 +393,9 @@ sysctl_machdep_comdefaultrate(SYSCTL_HANDLER_ARGS)
return (ENXIO);
tp = com->tp;
if (tp == NULL)
return (ENXIO);
/*
* set the initial and lock rates for /dev/ttydXX and /dev/cuaXX
* (note, the lock rates really are boolean -- if non-zero, disallow
@ -406,7 +409,7 @@ sysctl_machdep_comdefaultrate(SYSCTL_HANDLER_ARGS)
/*
* if we're open, change the running rate too
*/
if (tp && (tp->t_state & TS_ISOPEN)) {
if (tp->t_state & TS_ISOPEN) {
tp->t_termios.c_ispeed =
tp->t_termios.c_ospeed = comdefaultrate;
s = spltty();
@ -1405,11 +1408,9 @@ sioclose(dev, flag, mode, td)
struct thread *td;
{
struct com_s *com;
int mynor;
int s;
struct tty *tp;
mynor = minor(dev);
com = dev->si_drv1;
if (com == NULL)
return (ENODEV);