diff options
| -rw-r--r-- | hw/char/cadence_uart.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/char/cadence_uart.c b/hw/char/cadence_uart.c index b4b5e8a3ee..154be34992 100644 --- a/hw/char/cadence_uart.c +++ b/hw/char/cadence_uart.c @@ -327,6 +327,11 @@ static gboolean cadence_uart_xmit(void *do_not_use, GIOCondition cond, static void uart_write_tx_fifo(CadenceUARTState *s, const uint8_t *buf, int size) { + /* ignore characters when unclocked or in reset */ + if (!clock_is_enabled(s->refclk) || device_is_in_reset(DEVICE(s))) { + return; + } + if ((s->r[R_CR] & UART_CR_TX_DIS) || !(s->r[R_CR] & UART_CR_TX_EN)) { return; } |