diff options
Diffstat (limited to 'drivers/usb/core/driver.c')
| -rw-r--r-- | drivers/usb/core/driver.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index fca61720b87..e35a17687c0 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -1646,7 +1646,7 @@ static int autosuspend_check(struct usb_device *udev) return 0; } -static int usb_runtime_suspend(struct device *dev) +int usb_runtime_suspend(struct device *dev) { struct usb_device *udev = to_usb_device(dev); int status; @@ -1659,10 +1659,15 @@ static int usb_runtime_suspend(struct device *dev) return -EAGAIN; status = usb_suspend_both(udev, PMSG_AUTO_SUSPEND); + /* The PM core reacts badly unless the return code is 0, + * -EAGAIN, or -EBUSY, so always return -EBUSY on an error. + */ + if (status != 0) + return -EBUSY; return status; } -static int usb_runtime_resume(struct device *dev) +int usb_runtime_resume(struct device *dev) { struct usb_device *udev = to_usb_device(dev); int status; @@ -1674,7 +1679,7 @@ static int usb_runtime_resume(struct device *dev) return status; } -static int usb_runtime_idle(struct device *dev) +int usb_runtime_idle(struct device *dev) { struct usb_device *udev = to_usb_device(dev); @@ -1686,19 +1691,10 @@ static int usb_runtime_idle(struct device *dev) return 0; } -static const struct dev_pm_ops usb_bus_pm_ops = { - .runtime_suspend = usb_runtime_suspend, - .runtime_resume = usb_runtime_resume, - .runtime_idle = usb_runtime_idle, -}; - #endif /* CONFIG_USB_SUSPEND */ struct bus_type usb_bus_type = { .name = "usb", .match = usb_device_match, .uevent = usb_uevent, -#ifdef CONFIG_USB_SUSPEND - .pm = &usb_bus_pm_ops, -#endif }; |