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drivers/rtc/rtc-coh901331.c: use clk_prepare_enable() and clk_disable_unprepare()

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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>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Julia Lawall 2012-10-04 17:14:07 -07:00 committed by Linus Torvalds
parent 90829c089e
commit 828296debf
1 changed files with 1 additions and 2 deletions
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3
drivers/rtc/rtc-coh901331.c
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@ -276,8 +276,7 @@ static void coh901331_shutdown(struct platform_device *pdev)
clk_enable(rtap->clk); clk_enable(rtap->clk);
writel(0, rtap->virtbase + COH901331_IRQ_MASK); writel(0, rtap->virtbase + COH901331_IRQ_MASK);
clk_disable(rtap->clk); clk_disable_unprepare(rtap->clk);
clk_unprepare(rtap->clk);
} }
static struct platform_driver coh901331_driver = { static struct platform_driver coh901331_driver = {