kern/47878: wm(4) "No EEPROM" prblem. The driver may misunderstand NVM bank on PCH2 or newer chips

[msaitoh%execsw.org@localhost]

>Number:         47878
>Category:       kern
>Synopsis:       wm(4) "No EEPROM" prblem. The driver may misunderstand NVM 
>bank on PCH2 or newer chips
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 02 17:10:00 +0000 2013
>Originator:     SAITOH Masanobu
>Release:        6.x
>Organization:
>Environment:
        6.x and -current
Architecture: i386
Machine: i386
>Description:
        if_wm.c::wm_valid_nvm_bank_detect_ich8lan() has a bug that
        it may misunderstand the bank number on PCH or newer chips.
        When the bank is misunderstood, wm_attach() prints "No EEPROM" and
        failed to attach. It's depend on the board whether the problem occurs
        or not.
>How-To-Repeat:
        Boot netbsd-6 or -current on PCH2 or newer chips.
>Fix:
        I'll fix the problem.