diff options
Diffstat (limited to 'drivers/base/power/generic_ops.c')
| -rw-r--r-- | drivers/base/power/generic_ops.c | 24 |
1 files changed, 6 insertions, 18 deletions
diff --git a/drivers/base/power/generic_ops.c b/drivers/base/power/generic_ops.c index 265a0ee3b49..1b878b955c8 100644 --- a/drivers/base/power/generic_ops.c +++ b/drivers/base/power/generic_ops.c @@ -97,16 +97,16 @@ int pm_generic_prepare(struct device *dev) * @event: PM transition of the system under way. * @bool: Whether or not this is the "noirq" stage. * - * If the device has not been suspended at run time, execute the - * suspend/freeze/poweroff/thaw callback provided by its driver, if defined, and - * return its error code. Otherwise, return zero. + * Execute the suspend/freeze/poweroff/thaw callback provided by the driver of + * @dev, if defined, and return its error code. Return 0 if the callback is + * not present. */ static int __pm_generic_call(struct device *dev, int event, bool noirq) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; int (*callback)(struct device *); - if (!pm || pm_runtime_suspended(dev)) + if (!pm) return 0; switch (event) { @@ -217,14 +217,12 @@ EXPORT_SYMBOL_GPL(pm_generic_thaw); * @bool: Whether or not this is the "noirq" stage. * * Execute the resume/resotre callback provided by the @dev's driver, if - * defined. If it returns 0, change the device's runtime PM status to 'active'. - * Return the callback's error code. + * defined, and return its error code. Return 0 if the callback is not present. */ static int __pm_generic_resume(struct device *dev, int event, bool noirq) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; int (*callback)(struct device *); - int ret; if (!pm) return 0; @@ -241,17 +239,7 @@ static int __pm_generic_resume(struct device *dev, int event, bool noirq) break; } - if (!callback) - return 0; - - ret = callback(dev); - if (!ret && !noirq && pm_runtime_enabled(dev)) { - pm_runtime_disable(dev); - pm_runtime_set_active(dev); - pm_runtime_enable(dev); - } - - return ret; + return callback ? callback(dev) : 0; } /** |