On Thu, Dec 21, 2017 at 09:54:26PM +0000, Shaikh, Azhar wrote: > Yes, I checked this part. What I was referring to is any other > callback function similar to clk_enable if gets added in future and > then needs to Access ops even after it is set to NULL... You can't call callback functions after tpm_unregister_chip, it isn't allowed. This is a special case where we know the specific implementation of this specific callback is OK. > But yes I get your point now. > > So do you mean something like this? Yes Jason