[PATCH 1/1] usb: xhci: fix return value of xhci_setup_device()

[Lu Baolu]

From: "Lu, Baolu" <baolu.lu@xxxxxxxxxxxxxxx>

xhci_setup_device() should return failure with correct error number
when xhci host has died, removed or halted.

Cc: stable@xxxxxxxxxxxxxxx # 4.3+
Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
---
 drivers/usb/host/xhci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 01d96c9..3e66e73 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -3785,8 +3785,10 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
 
 	mutex_lock(&xhci->mutex);
 
-	if (xhci->xhc_state)	/* dying, removing or halted */
+	if (xhci->xhc_state) {	/* dying, removing or halted */
+		ret = -ESHUTDOWN;
 		goto out;
+	}
 
 	if (!udev->slot_id) {
 		xhci_dbg_trace(xhci, trace_xhci_dbg_address,
-- 
2.1.4