On Tue, Feb 16, 2021 at 12:02:24PM +0100, Laurent Bigonville wrote: > Le 16/02/21 à 09:17, Jarkko Sakkinen a écrit : > > From: Lukasz Majczak <lma@xxxxxxxxxxxx> > > > > This is shown with Samsung Chromebook Pro (Caroline) with TPM 1.2 > > (SLB 9670): > > > > [ 4.324298] TPM returned invalid status > > [ 4.324806] WARNING: CPU: 2 PID: 1 at drivers/char/tpm/tpm_tis_core.c:275 tpm_tis_status+0x86/0x8f > > > > Background > > ========== > > > > TCG PC Client Platform TPM Profile (PTP) Specification, paragraph 6.1 FIFO > > Interface Locality Usage per Register, Table 39 Register Behavior Based on > > Locality Setting for FIFO - a read attempt to TPM_STS_x Registers returns > > 0xFF in case of lack of locality. The described situation manifests itself > > with the following warning trace: > > > > The fix > > ======= > > > > Add the proper decorations to tpm_tis_gen_interrupt() and > > tpm_get_timeouts(). > > I tried that patch (alone on the top of the HEAD of Linus master) and I > still get the same trace in dmesg Can you give a shot to git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git It has couple of more fixes, and paste the log. /Jarkko
