kern/48494: After ACPICA 20131218 update, uhub topology is misunderstood

[ryoon%NetBSD.org@localhost]

>Number:         48494
>Category:       kern
>Synopsis:       After ACPICA 20131218 update, uhub topology is misunderstood
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jan 03 16:10:00 +0000 2014
>Originator:     Ryo ONODERA
>Release:        NetBSD 6.99.28
>Organization:
        
>Environment:
        
        
System: NetBSD tellurium.elements.tetera.org 6.99.28 NetBSD 6.99.28 (DTRACE2) 
#0: Sat Jan 4 00:45:22 JST 2014 
ryo_on%tellurium.elements.tetera.org@localhost:/usr/obj/amd64/sys/arch/amd64/compile/DTRACE2
 amd64
Architecture: x86_64
Machine: amd64
>Description:
After ACPICA 20131218 update, MacBook Air mid 2012's internal uhub2 and uhub3
is misunderstood, and USB socket does not work anymore.
The external USB socket had been recognized as uhub2.


dmesg of before ACPICA update, 2013-12-26:

uhub2 at uhub0 port 1: vendor 0x8087 product 0x0024, class 9/0, rev 2.00/0.00, 
addr 2
uhub2: single transaction translator
uhub3 at uhub1 port 1: vendor 0x8087 product 0x0024, class 9/0, rev 2.00/0.00, 
addr 2
uhub3: single transaction translator
uhub2: 6 ports with 5 removable, self powered
uhub3: 8 ports with 7 removable, self powered
uhub4 at uhub3 port 8: vendor 0x0424 product 0x2512, class 9/0, rev 2.00/b.b3, 
addr 3
uhub4: multiple transaction translators
uhub4: 2 ports with 0 removable, self powered


dmesg of after ACPICA update, 2014-01-03:
(2013-12-{29,31} kernel has same lines)

uhub2 at uhub1 port 1: vendor 0x8087 product 0x0024, class 9/0, rev 2.00/0.00, a
ddr 2
uhub2: single transaction translator
uhub3 at uhub0 port 1: vendor 0x8087 product 0x0024, class 9/0, rev 2.00/0.00, a
ddr 2
uhub3: single transaction translator
uhub3: 6 ports with 5 removable, self powered
uhub2: 8 ports with 7 removable, self powered
uhub4 at uhub2 port 8: vendor 0x0424 product 0x2512, class 9/0, rev 2.00/b.b3, a
ddr 3
uhub4: multiple transaction translators
uhub4: 2 ports with 0 removable, self powered


        
>How-To-Repeat:
Run latest amd64 kernel with ACPI.

        
>Fix:
        
I have no idea.
I want to submit any information about this problem.
What is needed?

>Unformatted: