diff mbox series

[1/3] serial: 8250: Discard RTS/DTS setting from clock update method

Message ID 20200923161950.6237-2-Sergey.Semin@baikalelectronics.ru (mailing list archive)
State New, archived
Headers show
Series serial: 8250_dw: Fix clk-notifier/port suspend deadlock | expand

Commit Message

Serge Semin Sept. 23, 2020, 4:19 p.m. UTC 
It has been a mistake to add the MCR register RTS/DTS fields setting in
the generic method of the UART reference clock update. There is no point
in asserting these lines at that procedure. Just discard the
serial8250_out_MCR() mathod invocation from there then.

Fixes: 868f3ee6e452 ("serial: 8250: Add 8250 port clock update method")
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
---
 drivers/tty/serial/8250/8250_port.c | 1 -
 1 file changed, 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index c71d647eb87a..1259fb6b66b3 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -2665,7 +2665,6 @@  void serial8250_update_uartclk(struct uart_port *port, unsigned int uartclk)
 
 	serial8250_set_divisor(port, baud, quot, frac);
 	serial_port_out(port, UART_LCR, up->lcr);
-	serial8250_out_MCR(up, UART_MCR_DTR | UART_MCR_RTS);
 
 	spin_unlock_irqrestore(&port->lock, flags);
 	serial8250_rpm_put(up);