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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-01-21 00:42:59 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-01-21 00:42:59 +0100
commit6efd3f8cde1d6acc20a715ac6ea17e01421742df (patch)
tree5fc4caece6907a2ccdeb8b13b887a01d683d9803 /drivers/usb/core
parenta72aea722f1b43442c9e219de824d5975dcdaa61 (diff)
parent3ded91041a762423bd49bb932ae2e36b65c6ae4b (diff)
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/core')
-rw-r--r--drivers/usb/core/port.c6
-rw-r--r--drivers/usb/core/usb.c8
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)