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Laptop cannot detect usb devices until they are unplugged and plugged in again. Fix suggested.


My laptop cannot detect my usb mouse (hub/usb serial adapter) when I
power it up. Rebooting does not fix the problem. I have to unplug the
device and plug it in again to get it recognized. I have included the
hack that fixed the problem on my machine. No time to write a real
fix. OpenBSD has gone about it the right way (I think) but I had
already solved the problem when I looked at their sources.

The comment in the original NetBSD sources suggests that the author
intended to delay only the OHCI controllers as I have done. I hope
someone gets the time to fix this. I first saw this 3 years ago and I
am getting tired of it.

Thank you,


--- /tmp/usb.c  2008-09-08 19:45:46.000000000 -0400
+++ aug28/usr/src/sys/dev/usb/usb.c     2008-09-02 10:28:12.000000000 -0400
@@ -367,8 +367,12 @@
         * know how to synchronize the creation of the threads so it
         * will work.
-       usb_delay_ms(sc->sc_bus, 500);
+    if (USBREV_2_0 != sc->sc_bus->usbrev)
+    {
+        /*FIXME*/
+        usb_delay_ms(sc->sc_bus, 2000);
+    }
        /* Make sure first discover does something. */
        sc->sc_bus->needs_explore = 1;

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