USB: remove unneeded WARN_ON

This patch (as883) removes an out-of-date WARN_ON from the main HCD
endpoint-disable routine.  The warning is triggered whenever an
endpoint is disabled while the root hub is suspended.  In the past
that may not have been legal, but it definitely is legal now.  Merely
unbinding a USB driver will do it.

Furthermore, I've never seen any occurrences of this warning that
really did signal an actual bug or error condition.  At this point it
has outlived its purpose.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 40cf882293e64dc57e54efbf3908cd725bd316b6..9ad2970a095d94dfe96fc6dd6146e428ef2783e0 100644 (file)
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1175,10 +1175,6 @@ void usb_hcd_endpoint_disable (struct usb_device *udev,
        struct urb              *urb;
 
        hcd = bus_to_hcd(udev->bus);
-
-       WARN_ON (!HC_IS_RUNNING (hcd->state) && hcd->state != HC_STATE_HALT &&
-                       udev->state != USB_STATE_NOTATTACHED);
-
        local_irq_disable ();
 
        /* ep is already gone from udev->ep_{in,out}[]; no more submits */