linux-next oops in windfarm startup

[Hugh Dickins]

Hi Ben,

3.4.0-rc5-next-20120504 and 3.4.0-rc6-next-20120507
crash while booting the PowerMac G5: I have to revert
your commit e326b30fda9985a2e7fda6fb9212b86bf025c39
powerpc/pmac: Convert windfarm_smu_sat to new i2c probing
to get a working system.

Actual oops message scrolled off screen, and I didn't note the registers.
NIP [c000000000376964] of_get_next_child+0x68/0x70
LR [c000000000376928] of_get_next_child+0x2c/0x70
Call Trace:
of_get_next_child
wf_sat_probe
i2c_device_probe
driver_probe_device
bus_for_each_drv
device_attach
i2c_new_device
i2c_powermac_probe
platform_drv_probe
driver_probe_device
__driver_attach
bus_for_each_dev
driver_attach
bus_add_driver
driver_register
platform_driver_register
i2c_powermac_driver_init
do_one_initcall
kernel_init
kernel_thread
Instruction dump:
ebff0040 e87e8008 480b86e9 60000000 38210090 7fe3fb78 e8010010 eba1ffe8
ebc1fff0 ebe1fff8 7c0803a6 4e800020 <ebfd0038> 4bffffd0 7c0802a6 fbe1fff8

Hugh