serial: stm32: clock disabling management

Keep the clock enabled at the end of stm32_init_port
but disable it in stm32_serial_remove.
Note that stm32_pm function is there to manage the
clock at runtime.

Signed-off-by: Gerald Baeza <gerald.baeza@st.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index ab294b927b673f23a508bf1400690b586ef5d7af..520e7defc08d43c176049593b0c7e5ff9a754145 100644 (file)
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -487,8 +487,6 @@ static int stm32_init_port(struct stm32_port *stm32port,
        if (!stm32port->port.uartclk)
                ret = -EINVAL;
 
-       clk_disable_unprepare(stm32port->clk);
-
        return ret;
 }
 
@@ -557,6 +555,9 @@ static int stm32_serial_probe(struct platform_device *pdev)
 static int stm32_serial_remove(struct platform_device *pdev)
 {
        struct uart_port *port = platform_get_drvdata(pdev);
+       struct stm32_port *stm32_port = to_stm32_port(port);
+
+       clk_disable_unprepare(stm32_port->clk);
 
        return uart_remove_one_port(&stm32_usart_driver, port);
 }