diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c index 6c365267e26a1f1b87491eb41cb8c43744d45cc5..b12a37bd37b630fddb6613c79992a6ec7cc8b58a 100644 --- a/drivers/tty/serial/meson_uart.c +++ b/drivers/tty/serial/meson_uart.c @@ -237,8 +237,10 @@ static irqreturn_t meson_uart_interrupt(int irq, void *dev_id) if (!(readl(port->membase + AML_UART_STATUS) & AML_UART_RX_EMPTY)) meson_receive_chars(port); - if (!(readl(port->membase + AML_UART_STATUS) & AML_UART_TX_FULL)) - meson_uart_start_tx(port); + if (!(readl(port->membase + AML_UART_STATUS) & AML_UART_TX_FULL)) { + if (readl(port->membase + AML_UART_CONTROL) & AML_UART_TX_INT_EN) + meson_uart_start_tx(port); + } spin_unlock(&port->lock);