Has anyone tested the eQEP driver with the 4.9 kernel?

I'm attempting to use it with the 4.9.5-ti-r16 from 2017-01-23.

I get a Segmentation Fault when I read the position:
# config-pin p8.11 qep
# config-pin p8.12 qep
# cat /sys/devices/platform/ocp/48304000.epwmss/48304180.eqep/position

It appears to occur in:
(eqep_get_position [tieqep]) from [<c08930d0>] (dev_attr_show+0x2c/0x58)

More details:
https://gist.github.com/pdp7/fe07082d23f2bfbc362c733a7b0aea72

thanks!
drew

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