Re: [PATCH for-linus-v5.5-rc6 0/3] TPM changes for v5.5-rc6

[Jarkko Sakkinen]

On Fri, 2020-01-03 at 21:32 -0700, Jerry Snitselaar wrote:
> On Sat Jan 04 20, Jarkko Sakkinen wrote:
> > There has been a bunch of reports (one from kernel bugzilla linked)
> > reporting that when this commit is applied it causes on some machines
> > boot freezes.
> > 
> > Unfortunately hardware where this commit causes a failure is not widely
> > available (only one I'm aware is Lenovo T490), which means we cannot
> > predict yet how long it will take to properly fix tpm_tis interrupt
> > probing.
> > 
> > Thus, the least worst short term action is to revert the code to the
> > state before this commit. In long term we need fix the tpm_tis probing
> > code to work on machines that Stefan's code was supposed to fix.
> > 
> > Link: https://bugzilla.kernel.org/show_bug.cgi?id=205935
> > Cc: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>
> > Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
> > 
> > Jarkko Sakkinen (1):
> >  tpm: Revert "tpm_tis: reserve chip for duration of tpm_tis_core_init"
> > 
> > Stefan Berger (2):
> >  tpm: Revert "tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for
> >    interrupts"
> >  tpm: Revert "tpm_tis_core: Turn on the TPM before probing IRQ's"
> > 
> > drivers/char/tpm/tpm_tis_core.c | 34 +++++++++++++++------------------
> > 1 file changed, 15 insertions(+), 19 deletions(-)
> > 
> > -- 
> > 2.20.1
> > 
> 
> Reviewed-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>

I'm sorry but forgot to append this before sending pull request :-/

/Jarkko