Fix FIFO overflow in rs232 driver

2020-01-09 16:40:28 +02:00
parent a8d6ad94c8
commit 8d316f3c8b
1 changed files with 2 additions and 0 deletions
@@ -30,6 +30,8 @@
 #define RS232_LSR_ERR   128

 void rs232_send(uint16_t port, char c) {
+    while (!(inb(port + RS232_LSR) & RS232_LSR_THRE)) {
+    }
    outb(port, c);
 }