diff mbox series

[V2,5/6] tty: serial: meson: meson_uart_shutdown omit clear AML_UART_TX_EN bit

Message ID 20211229135350.9659-6-yu.tu@amlogic.com
State New
Headers show
Series the UART driver compatible with the Amlogic Meson S4 | expand

Commit Message

Yu Tu Dec. 29, 2021, 1:53 p.m. UTC 
This change is an improvement. The meson_uart_shutdown function
should have the opposite operation to the meson_uart_startup
function, but the meson_uart_shutdown of AML_UART_TX_EN is logically
missing.

Signed-off-by: Yu Tu <yu.tu@amlogic.com>
---
 drivers/tty/serial/meson_uart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 9b07e3534969..c17109d6d441 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -140,7 +140,7 @@  static void meson_uart_shutdown(struct uart_port *port)
 	spin_lock_irqsave(&port->lock, flags);
 
 	val = readl(port->membase + AML_UART_CONTROL);
-	val &= ~AML_UART_RX_EN;
+	val &= ~(AML_UART_RX_EN | AML_UART_TX_EN);
 	val &= ~(AML_UART_RX_INT_EN | AML_UART_TX_INT_EN);
 	writel(val, port->membase + AML_UART_CONTROL);