On Tue, 25 Jul 2006, Matthias Urlichs wrote:
> This is the perennial "we have an OHCI interface on a PCMCIA card. We
> pull the card. The kernel crashes / hangs / whatever" problem.
>
> [ INFO: inconsistent lock state ] -- details below.
This is interesting because the "inconsistent lock state" message involves
the UHCI controller as well as the OHCI controller. And ironically, the
error has nothing to do with the fact that a PCMCIA card was ejected.
It could have happened any time a USB controller was turned off.
Does the following patch help?
Alan Stern
Index: usb-2.6/drivers/usb/core/hcd.c
===================================================================
--- usb-2.6.orig/drivers/usb/core/hcd.c
+++ usb-2.6/drivers/usb/core/hcd.c
@@ -1371,14 +1371,13 @@ hcd_endpoint_disable (struct usb_device
WARN_ON (!HC_IS_RUNNING (hcd->state) && hcd->state != HC_STATE_HALT &&
udev->state != USB_STATE_NOTATTACHED);
- local_irq_disable ();
-
/* FIXME move most of this into message.c as part of its
* endpoint disable logic
*/
/* ep is already gone from udev->ep_{in,out}[]; no more submits */
rescan:
+ local_irq_disable ();
spin_lock (&hcd_data_lock);
list_for_each_entry (urb, &ep->urb_list, urb_list) {
int tmp;
@@ -1399,6 +1398,7 @@ rescan:
if (tmp == -EINPROGRESS)
urb->status = -ESHUTDOWN;
spin_unlock (&urb->lock);
+ local_irq_enable ();
/* kick hcd unless it's already returning this */
if (tmp == -EINPROGRESS) {
-------------------------------------------------------------------------
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