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author | Julia Lawall <Julia.Lawall@lip6.fr> | 2012-08-26 16:01:01 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-05 19:33:39 (GMT) |
commit | 1c4c4394a6040b7bd2154e848cd9ab536b6ab0dd (patch) | |
tree | 644464982ee17d37976a97b51c6c5ff33d26414f /drivers/tty/serial/amba-pl010.c | |
parent | e372dc6c62bf0246a07f3291a26c562cc8659fbd (diff) | |
download | linux-fsl-qoriq-1c4c4394a6040b7bd2154e848cd9ab536b6ab0dd.tar.xz |
drivers/tty/serial/amba-pl0{10,11}.c: use clk_prepare_enable and clk_disable_unprepare
Clk_prepare_enable and clk_disable_unprepare combine clk_prepare and
clk_enable, and clk_disable and clk_unprepare. The9 make the code more
concise, and ensure that clk_unprepare is called when clk_enable fails.
A simplified version of the semantic patch that introduces calls to these
functions is as follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression e;
@@
- clk_prepare(e);
- clk_enable(e);
+ clk_prepare_enable(e);
@@
expression e;
@@
- clk_disable(e);
- clk_unprepare(e);
+ clk_disable_unprepare(e);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/amba-pl010.c')
-rw-r--r-- | drivers/tty/serial/amba-pl010.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c index 0d91a54..22317dd 100644 --- a/drivers/tty/serial/amba-pl010.c +++ b/drivers/tty/serial/amba-pl010.c @@ -312,16 +312,12 @@ 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); + retval = clk_prepare_enable(uap->clk); if (retval) - goto clk_unprep; + goto out; uap->port.uartclk = clk_get_rate(uap->clk); @@ -346,9 +342,7 @@ static int pl010_startup(struct uart_port *port) return 0; clk_dis: - clk_disable(uap->clk); - clk_unprep: - clk_unprepare(uap->clk); + clk_disable_unprepare(uap->clk); out: return retval; } @@ -375,8 +369,7 @@ static void pl010_shutdown(struct uart_port *port) /* * Shut down the clock producer */ - clk_disable(uap->clk); - clk_unprepare(uap->clk); + clk_disable_unprepare(uap->clk); } static void |