This patch adds a check to ensure that the device's state is not NOTATTACHED,
ATTACHED, POWERED or RECONNECTING before trying to disable lpm, because if
the device is in one of those states the control transfer to disable
device-initiated LPM will fail (as well as any transfer, since usb_submit_urb()
will fail).
Signed-off-by: Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
Reported-by: Martin MOKREJS <mmokrejs@xxxxxxxxx>
---
drivers/usb/core/hub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index fe8d95d..a6c10f0 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3716,7 +3716,7 @@ int usb_disable_lpm(struct usb_device *udev)
{
struct usb_hcd *hcd;
- if (!udev || !udev->parent ||
+ if (!udev || udev->state < USB_STATE_UNAUTHENTICATED || !udev->parent ||
udev->speed != USB_SPEED_SUPER ||
!udev->lpm_capable)
return 0;
--
1.8.3.4
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