Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2e1a0a11 authored by Stefan Berger's avatar Stefan Berger Committed by Greg Kroah-Hartman
Browse files

tpm: Revert "tpm_tis_core: Turn on the TPM before probing IRQ's"

commit aa4a63dd981682b1742baa01237036e48bc11923 upstream.

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 fix was supposed to fix.

Fixes: 21df4a8b6018 ("tpm_tis: reserve chip for duration of tpm_tis_core_init")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=205935


Cc: stable@vger.kernel.org
Cc: Jerry Snitselaar <jsnitsel@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Tested-by: default avatarDan Williams <dan.j.williams@intel.com>
Tested-by: default avatarXiaoping Zhou <xiaoping.zhou@intel.com>
Signed-off-by: default avatarStefan Berger <stefanb@linux.ibm.com>
Reported-by: default avatarJerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: default avatarJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 495e9443
Loading
Loading
Loading
Loading
0% Loading or .
You are about to add 0 people to the discussion. Proceed with caution.
Please register or to comment