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drivers/rtc/rtc-coh901331.c: use clk_prepare/unprepare 

Make sure we prepare/unprepare the clock for the COH901331 RTC driver as
is required by the clk API especially if you use common clock.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Walleij 2012-07-30 14:41:31 -07:00 committed by Linus Torvalds
parent 261eba7335
commit 8384dfeb75
1 changed files with 8 additions and 3 deletions
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11
drivers/rtc/rtc-coh901331.c
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@ -157,6 +157,7 @@ static int __exit coh901331_remove(struct platform_device *pdev)
if (rtap) {
free_irq(rtap->irq, rtap);
rtc_device_unregister(rtap->rtc);
clk_unprepare(rtap->clk);
clk_put(rtap->clk);
iounmap(rtap->virtbase);
release_mem_region(rtap->phybase, rtap->physize);
@ -213,10 +214,10 @@ static int __init coh901331_probe(struct platform_device *pdev)
}
/* We enable/disable the clock only to assure it works */
ret = clk_enable(rtap->clk);
ret = clk_prepare_enable(rtap->clk);
if (ret) {
dev_err(&pdev->dev, "could not enable clock\n");
goto out_no_clk_enable;
goto out_no_clk_prepenable;
}
clk_disable(rtap->clk);
@ -232,7 +233,8 @@ static int __init coh901331_probe(struct platform_device *pdev)
out_no_rtc:
platform_set_drvdata(pdev, NULL);
out_no_clk_enable:
clk_unprepare(rtap->clk);
out_no_clk_prepenable:
clk_put(rtap->clk);
out_no_clk:
free_irq(rtap->irq, rtap);
@ -265,6 +267,7 @@ static int coh901331_suspend(struct platform_device *pdev, pm_message_t state)
writel(0, rtap->virtbase + COH901331_IRQ_MASK);
clk_disable(rtap->clk);
}
clk_unprepare(rtap->clk);
return 0;
}
@ -272,6 +275,7 @@ static int coh901331_resume(struct platform_device *pdev)
{
struct coh901331_port *rtap = dev_get_drvdata(&pdev->dev);
clk_prepare(rtap->clk);
if (device_may_wakeup(&pdev->dev)) {
disable_irq_wake(rtap->irq);
} else {
@ -293,6 +297,7 @@ 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);
}
static struct platform_driver coh901331_driver = {