4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 815d835b7ba46685c316b000013367dacb2b461b ]

Using over-sampling ratio, lpuart can accept baud rate upto uartclk / 4.

Signed-off-by: Tomonori Sakita <[email protected]>
Signed-off-by: Atsushi Nemoto <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
 drivers/tty/serial/fsl_lpuart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 7d030c2e42ffd..50b6746a8b5d7 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1695,7 +1695,7 @@ lpuart32_set_termios(struct uart_port *port, struct 
ktermios *termios,
        }
 
        /* ask the core to calculate the divisor */
-       baud = uart_get_baud_rate(port, termios, old, 50, port->uartclk / 16);
+       baud = uart_get_baud_rate(port, termios, old, 50, port->uartclk / 4);
 
        spin_lock_irqsave(&sport->port.lock, flags);
 
-- 
2.19.1



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