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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-01-21 00:42:59 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-01-21 00:42:59 +0100 |
| commit | 6efd3f8cde1d6acc20a715ac6ea17e01421742df (patch) | |
| tree | 5fc4caece6907a2ccdeb8b13b887a01d683d9803 /drivers/usb | |
| parent | Merge branches 'acpica', 'acpi-video' and 'acpi-fan' (diff) | |
| parent | driver core: Avoid NULL pointer dereferences in device_is_bound() (diff) | |
| download | linux-6efd3f8cde1d6acc20a715ac6ea17e01421742df.tar.xz linux-6efd3f8cde1d6acc20a715ac6ea17e01421742df.zip | |
Merge branch 'pm-core'
* pm-core:
driver core: Avoid NULL pointer dereferences in device_is_bound()
platform: Do not detach from PM domains on shutdown
USB / PM: Allow USB devices to remain runtime-suspended when sleeping
PM / sleep: Go direct_complete if driver has no callbacks
PM / Domains: add setter for dev.pm_domain
device core: add device_is_bound()
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/core/port.c | 6 | ||||
| -rw-r--r-- | drivers/usb/core/usb.c | 8 |
2 files changed, 13 insertions, 1 deletions
diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index 5487fe308f01..514b563e3e5f 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -168,12 +168,18 @@ static int usb_port_runtime_suspend(struct device *dev) return retval; } + +static int usb_port_prepare(struct device *dev) +{ + return 1; +} #endif static const struct dev_pm_ops usb_port_pm_ops = { #ifdef CONFIG_PM .runtime_suspend = usb_port_runtime_suspend, .runtime_resume = usb_port_runtime_resume, + .prepare = usb_port_prepare, #endif }; diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index f8bbd0b6d9fe..cafc11902794 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -316,7 +316,13 @@ static int usb_dev_uevent(struct device *dev, struct kobj_uevent_env *env) static int usb_dev_prepare(struct device *dev) { - return 0; /* Implement eventually? */ + struct usb_device *udev = to_usb_device(dev); + + /* Return 0 if the current wakeup setting is wrong, otherwise 1 */ + if (udev->do_remote_wakeup != device_may_wakeup(dev)) + return 0; + + return 1; } static void usb_dev_complete(struct device *dev) |