Re: Keyboard stops working after *lock [Was: 2.6.21-rc2-mm1]

Alan Stern
2007-03-15T20:00:35Z

On Tue, 13 Mar 2007, Jiri Slaby wrote:

> So, do you mean rmmod uhci_hcd, unplug the keyboard, modprobe
> uhci_hcd, start usbmon, plug the keyboard, press numlock, stop usbmon,
> post it?

By the way, what happens if you press CapsLock rather than NumLock? It
should behave pretty the same, sending a command to the keyboard to change
an LED setting. Does the keyboard then stop working in the same way?

Alan Stern

P.S.: When you do your testing, please apply the patch below. I don't
know if it's related to your problem, but I did see this error show up in
someone else's system log.

Index: usb-2.6/drivers/usb/host/uhci-q.c
===================================================================
--- usb-2.6.orig/drivers/usb/host/uhci-q.c
+++ usb-2.6/drivers/usb/host/uhci-q.c
@@ -139,8 +139,10 @@ static struct uhci_td *uhci_alloc_td(str

static void uhci_free_td(struct uhci_hcd *uhci, struct uhci_td *td)
{
- if (!list_empty(&td->list))
+ if (!list_empty(&td->list)) {
dev_warn(uhci_dev(uhci), "td %p still in list!\n", td);
+ WARN_ON(1);
+ }
if (!list_empty(&td->fl_list))
dev_warn(uhci_dev(uhci), "td %p still in fl_list!\n", td);