How to "modprobe -r ehci_hcd" at boot

reitsma · 03-27-2007, 01:51 PM

Hi,

In order to make my palm (Z22) work perfectly with FC6, I remove the ehci_hcd module at boot time:

>modprobe -r ehci_hcd

I know that I can add this command to my /etc/rc.local file to have it executed every time I boot my machine.

However, rather than removing the module at boot time, I would like to prevent it from being loaded in the first place by adding it to /etc/hotplug/blacklist.

However, it seems that in FC6 there is no /etc/hotplug.

Can anyone tell me how I can prevent the ehci_hcd module from loading in FC6?

RR

drewbug01 · 03-27-2007, 05:39 PM

couldn't you try adding it to /etc/modprobe.d/blacklist ?

reitsma · 03-28-2007, 05:32 PM

Thanks drewbug01! That's seems to work just fine!

RR

business_kid · 03-29-2007, 09:59 AM

If your problem is the ehci_hcd module isn't working, submit a bug or email the maintainer. If it's log spam (senseless error messages) like the problem I had, there's a kernel option to fix it since 2.6.19

options ehci-hcd ignore_oc=1

We cracked the problem with a patch (which I probably still have) by Rafal Bilinski to the ehci_hcd code to display the various registers as I attached and removed devices. One set of usb ports just wasn't cutting the mustard, so the ignore_oc option was the only way. I think I have that patch too. This was tested on 2.6.19-rc4 and went upstream. How long it takes to get out I'm not sure.