diff options
Diffstat (limited to 'drivers/serial/serial_lpuart.c')
| -rw-r--r-- | drivers/serial/serial_lpuart.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/serial/serial_lpuart.c b/drivers/serial/serial_lpuart.c index da5f9a21f46..96173ca4409 100644 --- a/drivers/serial/serial_lpuart.c +++ b/drivers/serial/serial_lpuart.c @@ -14,6 +14,7 @@ #define US1_TDRE (1 << 7) #define US1_RDRF (1 << 5) +#define US1_OR (1 << 3) #define UC2_TE (1 << 3) #define UC2_RE (1 << 2) @@ -38,14 +39,10 @@ static void lpuart_serial_setbrg(void) static int lpuart_serial_getc(void) { - u8 status; - - while (!(__raw_readb(&base->us1) & US1_RDRF)) + while (!(__raw_readb(&base->us1) & (US1_RDRF | US1_OR))) WATCHDOG_RESET(); - status = __raw_readb(&base->us1); - status |= US1_RDRF; - __raw_writeb(status, &base->us1); + barrier(); return __raw_readb(&base->ud); } |