On Mon, Sep 05, 2016 at 08:44:34AM +0300, Jarkko Sakkinen wrote: > On Sun, Sep 04, 2016 at 02:14:06PM -0600, Jason Gunthorpe wrote: > > On Sat, Sep 03, 2016 at 09:26:05AM +0300, Jarkko Sakkinen wrote: > > > > > > > > OK, how would one get the chip instance? > > > > Most subsystems have a get function that returns a kref'd pointer. For > > TPM all we really need today is a 'get_default_tpm_for_ns' kind of > > function. > > Sorry, but I have no idea what you are talking about.
Go look at how rtc or net work. > This does not imply that these structure definitions need to be in > include/linux/tpm.h since you are talking something that does not exist. Well, I've been slowly pushing tpm to be more like a standard subystem for a long time - not all the parts are there yet. A standard subsystem will have a get/put scheme for tpm_chip. So, yes, it does not exist, but you should be planning for it to exist someday.. Jason
