From 36b8f1e2dc8d0da4571788053af70f1f45d96ecf Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 22 Sep 2011 11:35:09 +0100 Subject: clk: amba-pl010: convert to clk_prepare()/clk_unprepare() Signed-off-by: Russell King --- drivers/tty/serial/amba-pl010.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'drivers/tty') diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c index c0d10c4ddb7..efdf92c3a35 100644 --- 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) -- cgit v1.2.3