serial8250-em: convert to clk_prepare/unprepare

Add calls to clk_prepare and unprepare so that EMMA Mobile EV2 can
migrate to the common clock framework.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
[takashi.yoshii.ze@renesas.com: edited for conflicts]
Signed-off-by: Takashi Yoshii <takashi.yoshii.zj@renesas.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/tty/serial/8250/8250_em.c b/drivers/tty/serial/8250/8250_em.c
index 5f3bba12c159..d1a9078003bd 100644
--- a/drivers/tty/serial/8250/8250_em.c
+++ b/drivers/tty/serial/8250/8250_em.c
@@ -122,7 +122,7 @@ static int serial8250_em_probe(struct platform_device *pdev)
         up.port.dev = &pdev->dev;
         up.port.private_data = priv;
 
-        clk_enable(priv->sclk);
+        clk_prepare_enable(priv->sclk);
         up.port.uartclk = clk_get_rate(priv->sclk);
 
         up.port.iotype = UPIO_MEM32;
@@ -134,7 +134,7 @@ static int serial8250_em_probe(struct platform_device *pdev)
         ret = serial8250_register_8250_port(&up);
         if (ret < 0) {
                 dev_err(&pdev->dev, "unable to register 8250 port\n");
-                clk_disable(priv->sclk);
+                clk_disable_unprepare(priv->sclk);
                 return ret;
         }
 
@@ -148,7 +148,7 @@ static int serial8250_em_remove(struct platform_device *pdev)
         struct serial8250_em_priv *priv = platform_get_drvdata(pdev);
 
         serial8250_unregister_port(priv->line);
-        clk_disable(priv->sclk);
+        clk_disable_unprepare(priv->sclk);
         return 0;
 }