http://bugzilla.kernel.org/show_bug.cgi?id=2944
[EMAIL PROTECTED] changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|CLOSED |NEW
Resolution|CODE_FIX |
------- Additional Comments From [EMAIL PROTECTED] 2006-04-05 08:32 -------
Unfortunately, the function which has been added by the patch needed to be
deactivated because it does not check against creating overlapping bus numbers
and that caused problems with some laptops:
Ivan Kokshaysky (Continuing PCI and Yenta troubles in 2.6.13.1 and 2.6.14-rc1):
http://lkml.org/lkml/2005/9/20/114
It seems that we can only renumber all busses or fixup the parent's subordinate
numbers after we completed scanning so what we can do checks to prevent
overlapping bus numbers when fixing up the parent subordinate numbers.
I created a kernel module which does the latter and it would not hurt if it
gets some more testing. I want to turn it into a patch which gets called
after scanning the PCI root bridge(s) is completed to fix the currently known
issues with BIOSes which were too lazy to reserve bus numbers for Cardbus
bridges.
As a lot of machines are affected, seems better than an approach to do a full
bus renumbering on all affected machines, as this would require getting DMI
values for all of them and side effects to Graphic cards already happened:
https://bugzilla.novell.com/show_bug.cgi?id=146438
This is the list of currently known affected sytems:
* ASUS Z71V and L3s
* Samsung X20 (fixed in latest BIOS, but older BIOSes are affected)
* Compaq R3140us and all Compaq R3000 series laptops with TI1620 Controller,
also Compaq R4000 series
* HP zv5000z (AMD64 3700+, known that fixup_parent_subordinate_busnr fixes it)
* HP zv5200z
* IBM ThinkPad 240
* An IBM ThinkPad (1.8 GHz Pentium M) debugged by Pavel Machek
gives the correspondig message which detects the breakage.
* MSI S260 / Medion SIM 2100 MD 95600
I'll attach the patch now.
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