> > On Sat, May 13, 2017 at 12:43:11PM +0000, Winkler, Tomas wrote: > > > The TPM class has some common shutdown code that must be executed > > > for all drivers. This adds some needed functionality for that > > > > The issue with this is, that on some platforms the only storage can be > > eMMC and TPM is using it,. It has to be ensured that the storage > > device won't go down before TPM2_shutdown is called. And there is no > > direct device hierarchy to ensure an orderly shutdown. > > Something will have to use the new device links stuff to define that > dependency, but that seems unrelated to this patch?
Yep, it's not directly related to this specific patch, this is more relevant particularly to TPM2_shutdown. > Can the kernel really shut down the eMMC while the hidden platform stuff is > still possibly using it? Goofy.. eMMC is single headed, so yes that can happen. Tomas
