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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2014-02-04 19:18:54 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2014-02-04 19:18:54 +0100
commit32dcfafb3b8cdc22641254d50571b8be1d33fae3 (patch)
tree731b327a7ca9f9ca0b832c30ab24a8ab505c8b9e /i386/i386at
parente6f93609728d0ad864fc2d7dacd9df128eccd37a (diff)
Fix comstart when the queue is empty
Found by Coverity * i386/i386at/com.c (comstart): Make `nch' an int. When `getc' returns -1, just return.
Diffstat (limited to 'i386/i386at')
-rw-r--r--i386/i386at/com.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/i386/i386at/com.c b/i386/i386at/com.c
index e1ba71a..6edbca0 100644
--- a/i386/i386at/com.c
+++ b/i386/i386at/com.c
@@ -618,7 +618,7 @@ void
comstart(tp)
struct tty *tp;
{
- char nch;
+ int nch;
#if 0
int i;
#endif
@@ -654,6 +654,8 @@ comst_4++;
}
#else
nch = getc(&tp->t_outq);
+ if (nch == -1)
+ return;
if ((nch & 0200) && ((tp->t_flags & LITOUT) == 0)) {
timeout((timer_func_t *)ttrstrt, (char *)tp, (nch & 0x7f) + 6);
tp->t_state |= TS_TIMEOUT;