i2c-probe in 2.6.28 returns -EOPNOTSUPP

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Hi All
I am trying to port the i2c client drivers from linux-omap-2.6.26 to 2.6.28.
The i2c client drivers are old styled. The i2c-probe function called by
attach_adapter function returns -EOPNOTSUPP.
This states adapter does not support SMBUS_QUICK command.
Same driver on linux-omap-2.6.26 works well.
The omap_i2c_func in i2c-omap.c driver doesn't seem to be returning
this support.

What changes have gone into i2c-omap driver that are causing i2c-probe
function to return this error value?

-- 
Best Regards
Pramod
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