[PATCH 0/2] Revert patches fixing probing of interrupts

Jarkko Sakkinen jarkko.sakkinen at linux.intel.com
Mon Dec 9 19:42:48 UTC 2019


On Mon, Dec 02, 2019 at 11:55:20AM -0700, Jerry Snitselaar wrote:
> On Sun Dec 01 19, Stefan Berger wrote:
> > On 11/29/19 5:37 PM, Jarkko Sakkinen wrote:
> > > On Tue, Nov 26, 2019 at 08:17:51AM -0500, Stefan Berger wrote:
> > > > From: Stefan Berger <stefanb at linux.ibm.com>
> > > > 
> > > > Revert the patches that were fixing the probing of interrupts due
> > > > to reports of interrupt stroms on some systems
> > > Can you explain how reverting is going to fix the issue?
> > 
> > 
> > The reverts fix 'the interrupt storm issue' that they are causing on
> > some systems but don't fix the issue with the interrupt mode not being
> > used. I was hoping Jerry would get access to a system faster but this
> > didn't seem to be the case. So sending these patches seemed the better
> > solution than leaving 5.4.x with the problem but going back to when it
> > worked 'better.'
> > 
> 
> I finally heard back from IT support, and unfortunately they don't
> have any T490s systems to give out on temp loan. So I can only send
> patched kernels to the end user that had the problem.

At least it is a fact that tpm_chip_stop() is called too early and that
is destined to cause issues.

Should I bake a patch or do you have already something?

/Jarkko



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