cvs commit: src/sys/bus/usb usb.c

Michael Neumann mneumann at
Wed Jun 4 04:58:24 PDT 2008

Kyle Butt wrote:
On Tue, May 27, 2008 at 05:00:47AM -0700, Michael Neumann wrote:
mneumann    2008/05/27 05:00:47 PDT

DragonFly src repository

  Modified files:
    sys/bus/usb          usb.c 
  Add a boot loader tunable hw.usb.hack_defer_exploration, which if set
  to 0 reverts to the old USB behaviour, i.e. USB keyboards should be again
  usable early at boot. By default, this is set to 1 which will avoid hanging
  the system on qemu and my HP compaq laptop and maybe others.
  Note that this is a hack around a shortcoming in the current USB stack and
  will go away once the shortcoming has been fixed.
  Revision  Changes    Path
  1.49      +36 -8     src/sys/bus/usb/usb.c
This flag if set to 1, prevents my wireless usb keyboard from working at all. I
can investigate further if someone would like.
Hm, I think this is a known issue. But it works when you set the flag
to 0, right?


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