diff options
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-max77686.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c index 03ebcf1c0f3d..645de5af707b 100644 --- a/drivers/rtc/rtc-max77686.c +++ b/drivers/rtc/rtc-max77686.c @@ -805,17 +805,33 @@ static int max77686_rtc_remove(struct platform_device *pdev) #ifdef CONFIG_PM_SLEEP static int max77686_rtc_suspend(struct device *dev) { + struct max77686_rtc_info *info = dev_get_drvdata(dev); + int ret = 0; + if (device_may_wakeup(dev)) { struct max77686_rtc_info *info = dev_get_drvdata(dev); - return enable_irq_wake(info->virq); + ret = enable_irq_wake(info->virq); } - return 0; + /* + * Main IRQ (not virtual) must be disabled during suspend because if it + * happens while suspended it will be handled before resuming I2C. + * + * Since Main IRQ is shared, all its users should disable it to be sure + * it won't fire while one of them is still suspended. + */ + disable_irq(info->rtc_irq); + + return ret; } static int max77686_rtc_resume(struct device *dev) { + struct max77686_rtc_info *info = dev_get_drvdata(dev); + + enable_irq(info->rtc_irq); + if (device_may_wakeup(dev)) { struct max77686_rtc_info *info = dev_get_drvdata(dev); |