Re: [PATCH] tpm: Revert "tpm: fix invalid locking in NONBLOCKING mode"
From: Alex Guzman
Date: Tue May 26 2020 - 18:35:02 EST
On Tue, 2020-05-26 at 14:33 -0700, Tadeusz Struk wrote:
> On 5/26/20 1:00 PM, James Bottomley wrote:
> > I don't think there is a root cause other than a TIS TPM is getting
> > annoyed by us cycling localities too rapidly because we don't do an
> > actual TPM operation between request and relinquish. Since the
> > first
> > request/relinquish seems unnecessary for the async case, moving the
> > ops
> > get eliminates the problem.
> Could be, so maybe we could try both patches.
> More debug info on the error path won't hurt.
With your logging patch, I consistently see this message in dmesg when
tpm tpm0: request_locality: failed to request locality 0 after 750 ms