Attaching mos7820 and usbserial debug logs from both kernels. Generated by adding "debug=1" option when loading both modules. The behaviour of mos7820 in 2.6.26-4 is quite different, there are whole swathes of functional code which seem not to be called in 2.6.26-4. Still not sure why, I don't have a source for 2.6.26-3 but the mos7820 code differences are small between 2.6.25 (last kernel source I can find quickly) and 2.6.26-4. Nick
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dmesg-2.6.26-3.gz
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dmesg-2.6.26-4.gz
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