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| author |   Ulf Hansson <ulf.hansson@linaro.org> | 2018-01-16 09:01:27 +0100 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-01-17 12:42:49 +0100 |
| commit | 617fcb673090e495f58565ff0171d07abdad53a7 (patch) | |
| tree | 587b42ba0d8ac2adfdab522fe4d054372719db1b /drivers/base/power/runtime.c | |
| parent | PM / runtime: Check ignore_children in pm_runtime_need_not_resume() (diff) | |
| download | linux-dev-617fcb673090e495f58565ff0171d07abdad53a7.tar.xz linux-dev-617fcb673090e495f58565ff0171d07abdad53a7.zip | |
PM / runtime: Allow no callbacks in pm_runtime_force_suspend|resume()
The pm_runtime_force_suspend|resume() helpers currently requires the device
to at some level (PM domain, bus, etc), have the ->runtime_suspend|resume()
callbacks assigned for it, else -ENOSYS is returned as an error.
However, there are no reason for this requirement, so let's simply remove
it by allowing these callbacks to be NULL.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/base/power/runtime.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index cb5e48b86453..8bef3cb2424d 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -1640,7 +1640,7 @@ static bool pm_runtime_need_not_resume(struct device *dev) int pm_runtime_force_suspend(struct device *dev) { int (*callback)(struct device *); - int ret = 0; + int ret; pm_runtime_disable(dev); if (pm_runtime_status_suspended(dev)) @@ -1648,12 +1648,7 @@ int pm_runtime_force_suspend(struct device *dev) callback = RPM_GET_CALLBACK(dev, runtime_suspend); - if (!callback) { - ret = -ENOSYS; - goto err; - } - - ret = callback(dev); + ret = callback ? callback(dev) : 0; if (ret) goto err; @@ -1704,7 +1699,7 @@ int pm_runtime_force_resume(struct device *dev) callback = RPM_GET_CALLBACK(dev, runtime_resume); - ret = callback ? callback(dev) : -ENOSYS; + ret = callback ? callback(dev) : 0; if (ret) { pm_runtime_set_suspended(dev); goto out; |