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rtc: coh901331: fix a missing check of clk_prepare

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clk_prepare() could fail, so let's check its status and if it fails
return its error code upstream.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Kangjie Lu 2018-12-25 20:43:33 -06:00 committed by Alexandre Belloni
parent bbb4383826
commit 5910fa0d0d
1 changed files with 5 additions and 1 deletions
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6
drivers/rtc/rtc-coh901331.c
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@ -235,9 +235,13 @@ static int coh901331_suspend(struct device *dev)
static int coh901331_resume(struct device *dev) static int coh901331_resume(struct device *dev)
{ {
int ret;
struct coh901331_port *rtap = dev_get_drvdata(dev); struct coh901331_port *rtap = dev_get_drvdata(dev);
clk_prepare(rtap->clk); ret = clk_prepare(rtap->clk);
if (ret)
return ret;
if (device_may_wakeup(dev)) { if (device_may_wakeup(dev)) {
disable_irq_wake(rtap->irq); disable_irq_wake(rtap->irq);
} else { } else {