Hi,

on an i.MX31-based system I observe a strange effect:

cat /sys/class/i2c-adapter/.../eeprom > /tmp/e1
rmmod <adapter-driver>
modprobe <adapter-driver>
cat /sys/class/i2c-adapter/.../eeprom > /tmp/e2

after which the first 0x40 bytes in e2 are zero. The rest is correct - as 
in e1. To recover I have to

rmmod eeprom
i2cdetect ... # incluging eeprom addresses
modprobe eeprom

I would suspect a software bug, but I get this with two alternative 
adapter drivers (mxc and imx - see my recent post to the list), and on a 
laptop with 2.6.26 I don't get this. The kernel on i.MX31 is a pretty 
fresh linux-next. Does this look like a hardware "feature"? Or do we have 
a regression?

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
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