serial: imx: add clk_prepare/clk_unprepare

It's for migrating to generic clk framework API.

Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 0b7fed7..e7fecee 100644 (file)
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1508,7 +1508,7 @@ static int serial_imx_probe(struct platform_device *pdev)
                ret = PTR_ERR(sport->clk);
                goto unmap;
        }
-       clk_enable(sport->clk);
+       clk_prepare_enable(sport->clk);
 
        sport->port.uartclk = clk_get_rate(sport->clk);
 
@@ -1531,8 +1531,8 @@ deinit:
        if (pdata && pdata->exit)
                pdata->exit(pdev);
 clkput:
+       clk_disable_unprepare(sport->clk);
        clk_put(sport->clk);
-       clk_disable(sport->clk);
 unmap:
        iounmap(sport->port.membase);
 free:
@@ -1552,11 +1552,10 @@ static int serial_imx_remove(struct platform_device *pdev)
 
        if (sport) {
                uart_remove_one_port(&imx_reg, &sport->port);
+               clk_disable_unprepare(sport->clk);
                clk_put(sport->clk);
        }
 
-       clk_disable(sport->clk);
-
        if (pdata && pdata->exit)
                pdata->exit(pdev);