Remove spin_lock_irqsave in stm32_config_rs485, it cause recursive locking. Already locked in uart_set_rs485_config. Signed-off-by: Borut Seljak <borut.seljak@xxxxxxx> --- drivers/tty/serial/stm32-usart.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index e8d7a7bb4339..da373a465f51 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -107,7 +107,6 @@ static int stm32_config_rs485(struct uart_port *port, bool over8; unsigned long flags; - spin_lock_irqsave(&port->lock, flags); stm32_clr_bits(port, ofs->cr1, BIT(cfg->uart_enable_bit)); port->rs485 = *rs485conf; @@ -147,7 +146,6 @@ static int stm32_config_rs485(struct uart_port *port, } stm32_set_bits(port, ofs->cr1, BIT(cfg->uart_enable_bit)); - spin_unlock_irqrestore(&port->lock, flags); return 0; } -- 2.17.1
