Bug 125086

Summary: [PATCH] rc.sysinit should force clean USB initialization
Product: [Fedora] Fedora Reporter: W. Michael Petullo <redhat>
Component: initscriptsAssignee: Bill Nottingham <notting>
Status: CLOSED WONTFIX QA Contact: Brock Organ <borgan>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: nphilipp, rvokal
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OS: Linux   
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Last Closed: 2004-08-25 19:15:07 UTC Type: ---
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Description Flags
Causes rc.sysinit to rmmod USB controller module before loading it none

Description W. Michael Petullo 2004-06-02 16:24:11 UTC 
From Bugzilla Helper:
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Description of problem:
Rc.sysinit should try to remove controller first in case initrd
inserted it without all the USB drivers available (cause hotplut to
re-run with all drivers available).

Version-Release number of selected component (if applicable):
initscripts-7.57-1

How reproducible:
Always

Steps to Reproduce:
1.  Find a system with a USB mouse.  Create an initrd that loads
ohci-hcd (or similar) module but does not contain the mousedev kernel
module or hotplug because these are not needed to boot.

2.  Boot the system.

3.  Notice that the initrd installs the ohci-hcd module but hotplug
and the mousedev module do not exist.  At this point the USB mouse
does not work.  

4.  Notice that once the root disk is set up and rc.sysinit is
executed by init, the ohci-hcd module is already loaded.  Hotplug and
the mousedev module are now available.  However, rc.sysinit does not
generate hotplug events by inserting the ohci-hcd module as it has
already been installed by the initrd.


Actual Results:  The mousedev module is not automatically installed. 
It must be loaded by hand.

Expected Results:  The mousedev module (and all other required USB
modules) should be loaded by the hotplug system.  The actions of the
initrd should have no affect on this.

Additional info:
Comment 1 W. Michael Petullo 2004-06-02 16:27:13 UTC 
Created attachment 100797 [details]
Causes rc.sysinit to rmmod USB controller module before loading it

This patch implements one possible solution to this problem.  By attempting to
remove the USB controller module before (re-)inserting it, rc.sysinit ensures
that the module will be inserted with the hotplug system and all USB modules
present.  As a result, the appropriate hotplug events will occur.
Comment 2 Bill Nottingham 2004-08-25 19:14:25 UTC 
This shouldn't be needed, as mousedev and keybdev are built in.
Comment 3 Bill Nottingham 2004-08-25 19:15:07 UTC 
In future releases, the udev startup should handle this.