Unfortunately, I left out one line from my spinlock cleanup patch
recently.
As a result, using interrupt URB's could cause a deadlock on SMP
kernels.
This should fix the deadlock Greg reported.
JE
--- linux-2.4.19-pre3.orig/drivers/usb/uhci.c Sun Mar 17 21:43:12 2002
+++ linux-2.4.19-pre3/drivers/usb/uhci.c Sun Mar 17 21:42:06 2002
@@ -1653,6 +1653,7 @@
/* Interrupts are an exception */
if (urb->interval) {
uhci_add_complete(urb);
+ spin_unlock_irqrestore(&urb->lock, flags);
return; /* <-- note return */
}
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