diff options
| -rw-r--r-- | drivers/base/power/main.c | 11 | ||||
| -rw-r--r-- | include/linux/pm.h | 2 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 6efef9fb23a1..0e26a6f6fd48 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -1046,3 +1046,14 @@ void __suspend_report_result(const char *function, void *fn, int ret) printk(KERN_ERR "%s(): %pF returns %d\n", function, fn, ret); } EXPORT_SYMBOL_GPL(__suspend_report_result); + +/** + * device_pm_wait_for_dev - Wait for suspend/resume of a device to complete. + * @dev: Device to wait for. + * @subordinate: Device that needs to wait for @dev. + */ +void device_pm_wait_for_dev(struct device *subordinate, struct device *dev) +{ + dpm_wait(dev, subordinate->power.async_suspend); +} +EXPORT_SYMBOL_GPL(device_pm_wait_for_dev); diff --git a/include/linux/pm.h b/include/linux/pm.h index 9c16cd20fc96..e80df06ad22a 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -512,6 +512,7 @@ extern void __suspend_report_result(const char *function, void *fn, int ret); __suspend_report_result(__func__, fn, ret); \ } while (0) +extern void device_pm_wait_for_dev(struct device *sub, struct device *dev); #else /* !CONFIG_PM_SLEEP */ #define device_pm_lock() do {} while (0) @@ -524,6 +525,7 @@ static inline int dpm_suspend_start(pm_message_t state) #define suspend_report_result(fn, ret) do {} while (0) +static inline void device_pm_wait_for_dev(struct device *a, struct device *b) {} #endif /* !CONFIG_PM_SLEEP */ /* How to reorder dpm_list after device_move() */ |