Bug#338615: udev: psmouse should be loaded after usb-stuff
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On Fri, 11 Nov 2005 17:50:03 +0100
md@Linux.IT (Marco d'Itri) wrote:
> On Nov 11, Mario <mario.tux@gmail.com> wrote:
>
> > The problem is that psmouse is loaded too early by recent udev,
> > more specifically: it is loaded BEFORE the loading of usb-stuff.
> > This is known issue of psmouse module:
> > http://www.ussg.iu.edu/hypermail/linux/kernel/0407.1/0862.html
> Then this is obviously a kernel bug.
> udevd cannot guarantee the modules loading order anyway.
Reading that referenced URL I tend to disagree that this is a kernel
bug: It seems that if hardware has USB legacy mode enabled, then USB
drivers can be explicitly loaded first to reset that.
So if BIOS can be told to not enable legacy USB support then that's the
best approach, but if not (I could imagine some laptops unable to
disable this) then order of driver loading is important - because of
USB drivers having this "added feature" of resetting legacy mode",
not because the psmouse driver should depend on the USB ones.
So I tend to think that a tool like udev that probes and loads drivers
for all hardware recognized should deal with this load order.
Kind regards,
- Jonas
- --
* Jonas Smedegaard - idealist og Internet-arkitekt
* Tlf.: +45 40843136 Website: http://dr.jones.dk/
- Enden er nær: http://www.shibumi.org/eoti.htm
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