diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2023-11-12 21:49:07 +0000 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2023-11-12 21:49:07 +0000 |
| commit | 04d6a2acecfe4fe44947da8b676f63bcd0f3c0fe (patch) | |
| tree | c0aab74517a6dbb8a8111a58c347c76a9f27ff33 | |
| parent | 8e3abc0cce6d52ebf9195ea277a6dbd92ba497a1 (diff) | |
devuart: fix wrong opens count in case of uartenable() error
| -rw-r--r-- | sys/src/9/port/devuart.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/src/9/port/devuart.c b/sys/src/9/port/devuart.c index 202151947..81e38b697 100644 --- a/sys/src/9/port/devuart.c +++ b/sys/src/9/port/devuart.c @@ -143,10 +143,11 @@ uartmouse(char *which, int (*putc)(Queue*, int), int setb1200) p = uartport(which); qlock(p); - if(p->opens++ == 0 && uartenable(p) == nil){ + if(p->opens == 0 && uartenable(p) == nil){ qunlock(p); error(Enodev); } + p->opens++; if(setb1200) uartctl(p, "b1200"); p->putc = putc; @@ -321,11 +322,12 @@ uartopen(Chan *c, int omode) case Ndataqid: p = uart[NETID(c->qid.path)]; qlock(p); - if(p->opens++ == 0 && uartenable(p) == nil){ + if(p->opens == 0 && uartenable(p) == nil){ qunlock(p); c->flag &= ~COPEN; error(Enodev); } + p->opens++; qunlock(p); break; } |