clk: amba-pl010: convert to clk_prepare()/clk_unprepare()

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
index c0d10c4ddb7355422f0bb426e296e167663fac0b..efdf92c3a352ba3d97237fc532b45b055d4e87e2 100644 (file)
--- a/drivers/tty/serial/amba-pl010.c
+++ b/drivers/tty/serial/amba-pl010.c
@@ -312,12 +312,16 @@ static int pl010_startup(struct uart_port *port)
        struct uart_amba_port *uap = (struct uart_amba_port *)port;
        int retval;
 
+       retval = clk_prepare(uap->clk);
+       if (retval)
+               goto out;
+
        /*
         * Try to enable the clock producer.
         */
        retval = clk_enable(uap->clk);
        if (retval)
-               goto out;
+               goto clk_unprep;
 
        uap->port.uartclk = clk_get_rate(uap->clk);
 
@@ -343,6 +347,8 @@ static int pl010_startup(struct uart_port *port)
 
  clk_dis:
        clk_disable(uap->clk);
+ clk_unprep:
+       clk_unprepare(uap->clk);
  out:
        return retval;
 }
@@ -370,6 +376,7 @@ static void pl010_shutdown(struct uart_port *port)
         * Shut down the clock producer
         */
        clk_disable(uap->clk);
+       clk_unprepare(uap->clk);
 }
 
 static void
@@ -626,6 +633,7 @@ static int __init pl010_console_setup(struct console *co, char *options)
        int bits = 8;
        int parity = 'n';
        int flow = 'n';
+       int ret;
 
        /*
         * Check whether an invalid uart number has been specified, and
@@ -638,6 +646,10 @@ static int __init pl010_console_setup(struct console *co, char *options)
        if (!uap)
                return -ENODEV;
 
+       ret = clk_prepare(uap->clk);
+       if (ret)
+               return ret;
+
        uap->port.uartclk = clk_get_rate(uap->clk);
 
        if (options)