diff options
Diffstat (limited to 'drivers/tty/serial/stm32-usart.c')
| -rw-r--r-- | drivers/tty/serial/stm32-usart.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 033856287ca2..ea8b591dd46f 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -293,13 +293,8 @@ static void stm32_transmit_chars(struct uart_port *port) return; } - if (uart_tx_stopped(port)) { - stm32_stop_tx(port); - return; - } - - if (uart_circ_empty(xmit)) { - stm32_stop_tx(port); + if (uart_circ_empty(xmit) || uart_tx_stopped(port)) { + stm32_clr_bits(port, ofs->cr1, USART_CR1_TXEIE); return; } @@ -312,7 +307,7 @@ static void stm32_transmit_chars(struct uart_port *port) uart_write_wakeup(port); if (uart_circ_empty(xmit)) - stm32_stop_tx(port); + stm32_clr_bits(port, ofs->cr1, USART_CR1_TXEIE); } static irqreturn_t stm32_interrupt(int irq, void *ptr) |