Messages in this thread Patch in this message | | | From | Benson Leung <> | Subject | [PATCH v2] HID: usbhid: clear needs_remote_wakeup before usb_kill_urb | Date | Thu, 13 Nov 2014 13:25:17 -0800 |
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usbhid->intf->needs_remote_wakeup is set when a device is opened, and is cleared when a device is closed.
When a usbhid device that does not support remote wake ( i.e. !device_can_wakeup() ) is closed, we fail out of autosuspend_check() because the autosuspend check is called before the flag is cleared as a result of usb_kill_urb(usbhid->urbin);
The result is that a device that may otherwise autosuspend will fail to enter suspend again after all handles to it are closed.
Clear the flag first before usb_kill_urb, which may result in a autosuspend_check().
Signed-off-by: Benson Leung <bleung@chromium.org> --- drivers/hid/usbhid/hid-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 04e34b9..ca66ad7 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -734,8 +734,8 @@ void usbhid_close(struct hid_device *hid) spin_unlock_irq(&usbhid->lock); hid_cancel_delayed_stuff(usbhid); if (!(hid->quirks & HID_QUIRK_ALWAYS_POLL)) { - usb_kill_urb(usbhid->urbin); usbhid->intf->needs_remote_wakeup = 0; + usb_kill_urb(usbhid->urbin); } } else { spin_unlock_irq(&usbhid->lock); -- 2.1.0.rc2.206.gedb03e5
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