Hi Takashi, Peter > I haven't looked through all code changes, but in general, be careful > when the driver is releasing something else than the devres-managed > stuff. Namely, the devres stuff is released *after* the call of > remove callback. Thank you for pointing it. Indeed it should be cared. I will fix it and do it on simple unregister case only in v2 Thank you for your help !! Best regards --- Renesas Electronics Ph.D. Kuninori Morimoto