Messages in this thread Patch in this message | | | From | Julia Lawall <> | Subject | [PATCH 13/13] drivers/rtc/rtc-coh901331.c: use clk_prepare_enable and clk_disable_unprepare | Date | Sun, 26 Aug 2012 18:01:05 +0200 |
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From: Julia Lawall <Julia.Lawall@lip6.fr>
Clk_prepare_enable and clk_disable_unprepare combine clk_prepare and clk_enable, and clk_disable and clk_unprepare. They 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>
--- I'm not sure about this. Maybe it would be better to leave the disable and unprepare separated, since there is no matching nearby clk_prepare.
drivers/rtc/rtc-coh901331.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c index 76b2156..c8115b8 100644 --- a/drivers/rtc/rtc-coh901331.c +++ b/drivers/rtc/rtc-coh901331.c @@ -276,8 +276,7 @@ static void coh901331_shutdown(struct platform_device *pdev) clk_enable(rtap->clk); writel(0, rtap->virtbase + COH901331_IRQ_MASK); - clk_disable(rtap->clk); - clk_unprepare(rtap->clk); + clk_disable_unprepare(rtap->clk); } static struct platform_driver coh901331_driver = {
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