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>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 0b7fed746b27..e7feceeebc2f 100644
--- 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);