diff options
Diffstat (limited to 'drivers/usb/core/driver.c')
| -rw-r--r-- | drivers/usb/core/driver.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 64b91d6c5a5..2f3dc4cdf79 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -301,7 +301,7 @@ static int usb_probe_interface(struct device *dev) intf->condition = USB_INTERFACE_BINDING; - /* Bound interfaces are initially active. They are + /* Probed interfaces are initially active. They are * runtime-PM-enabled only if the driver has autosuspend support. * They are sensitive to their children's power states. */ @@ -437,11 +437,11 @@ int usb_driver_claim_interface(struct usb_driver *driver, iface->condition = USB_INTERFACE_BOUND; - /* Bound interfaces are initially active. They are + /* Claimed interfaces are initially inactive (suspended). They are * runtime-PM-enabled only if the driver has autosuspend support. * They are sensitive to their children's power states. */ - pm_runtime_set_active(dev); + pm_runtime_set_suspended(dev); pm_suspend_ignore_children(dev, false); if (driver->supports_autosuspend) pm_runtime_enable(dev); @@ -1170,7 +1170,7 @@ done: static int usb_suspend_both(struct usb_device *udev, pm_message_t msg) { int status = 0; - int i = 0; + int i = 0, n = 0; struct usb_interface *intf; if (udev->state == USB_STATE_NOTATTACHED || @@ -1179,7 +1179,8 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg) /* Suspend all the interfaces and then udev itself */ if (udev->actconfig) { - for (; i < udev->actconfig->desc.bNumInterfaces; i++) { + n = udev->actconfig->desc.bNumInterfaces; + for (i = n - 1; i >= 0; --i) { intf = udev->actconfig->interface[i]; status = usb_suspend_interface(udev, intf, msg); if (status != 0) @@ -1192,7 +1193,7 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg) /* If the suspend failed, resume interfaces that did get suspended */ if (status != 0) { msg.event ^= (PM_EVENT_SUSPEND | PM_EVENT_RESUME); - while (--i >= 0) { + while (++i < n) { intf = udev->actconfig->interface[i]; usb_resume_interface(udev, intf, msg, 0); } |