hd44780: Add keystring array boundary check. Have all subdrivers close

previously opened devices.
2010-01-10 17:07:48 +00:00
parent 97a2b20b0d
commit 6fba5cef68
5 changed files with 43 additions and 5 deletions
@@ -334,7 +334,9 @@ serial_HD44780_scankeypad(PrivateData *p)
 void
 serial_HD44780_close(PrivateData *p)
 {
-	if (SERIAL_IF.end_code)
-		write(p->fd, &SERIAL_IF.end_code, 1);
-	close(p->fd);
+	if (p->fd >= 0) {
+		if (SERIAL_IF.end_code)
+			write(p->fd, &SERIAL_IF.end_code, 1);
+		close(p->fd);
+	}
 }