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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This patch (as883) removes an out-of-date WARN_ON from the main HCD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>
hifive-unleashed-5.1
Alan Stern 2007-04-05 16:07:44 -04:00 committed by Greg Kroah-Hartman
parent ef7f6c7084
commit bf87ce5a06
1 changed files with 0 additions and 4 deletions
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4
drivers/usb/core/hcd.c
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@ -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 */