diff options
Diffstat (limited to 'Documentation/power')
| -rw-r--r-- | Documentation/power/pci.txt | 2 | ||||
| -rw-r--r-- | Documentation/power/runtime_pm.txt | 6 |
2 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/power/pci.txt b/Documentation/power/pci.txt index b0e911e0e8f5..44558882aa60 100644 --- a/Documentation/power/pci.txt +++ b/Documentation/power/pci.txt @@ -999,7 +999,7 @@ from its probe routine to make runtime PM work for the device. It is important to remember that the driver's runtime_suspend() callback may be executed right after the usage counter has been decremented, because -user space may already have cuased the pm_runtime_allow() helper function +user space may already have caused the pm_runtime_allow() helper function unblocking the runtime PM of the device to run via sysfs, so the driver must be prepared to cope with that. diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index 0784bc3a2ab5..7328cf85236c 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -371,6 +371,12 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: - increment the device's usage counter, run pm_runtime_resume(dev) and return its result + int pm_runtime_get_if_in_use(struct device *dev); + - return -EINVAL if 'power.disable_depth' is nonzero; otherwise, if the + runtime PM status is RPM_ACTIVE and the runtime PM usage counter is + nonzero, increment the counter and return 1; otherwise return 0 without + changing the counter + void pm_runtime_put_noidle(struct device *dev); - decrement the device's usage counter |