diff mbox series

[02/13] serial: stm32: fix startup by enabling usart for reception

Message ID 20210219174736.1022-3-erwan.leray@foss.st.com
State Superseded
Headers show
Series stm32 usart various fixes | expand

Commit Message

Erwan LE RAY Feb. 19, 2021, 5:47 p.m. UTC 
RX is configured, but usart is not enabled in startup function.
Kernel documentation specifies that startup should enable the port for
reception.
Fix the startup by enabling usart for reception.

Fixes: 84872dc448fe ("serial: stm32: add RX and TX FIFO flush")
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
diff mbox series

Patch

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index c67029ebcac8..33a479062948 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -634,6 +634,7 @@  static int stm32_usart_startup(struct uart_port *port)
 {
 	struct stm32_port *stm32_port = to_stm32_port(port);
 	struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
+	struct stm32_usart_config *cfg = &stm32_port->info->cfg;
 	const char *name = to_platform_device(port->dev)->name;
 	u32 val;
 	int ret;
@@ -658,7 +659,7 @@  static int stm32_usart_startup(struct uart_port *port)
 	}
 
 	/* RX FIFO enabling */
-	val = stm32_port->cr1_irq | USART_CR1_RE;
+	val = stm32_port->cr1_irq | USART_CR1_RE | BIT(cfg->uart_enable_bit);
 	if (stm32_port->fifoen)
 		val |= USART_CR1_FIFOEN;
 	stm32_usart_set_bits(port, ofs->cr1, val);