Hi, On 10.05.21 at 14:28, Jarkko Sakkinen wrote: > The earlier fix (linked) only partially fixed the locality handling bug > in tpm_tis_gen_interrupt(), i.e. only for TPM 1.x. > > Extend the locality handling to cover TPM2. > > Cc: Hans de Goede <hdegoede@xxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Link: https://lore.kernel.org/linux-integrity/20210220125534.20707-1-jarkko@xxxxxxxxxx/ > Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") > Reported-by: Lino Sanfilippo <LinoSanfilippo@xxxxxx> > Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx> > --- > > v1: > * Testing done with Intel NUC5i5MYHE with SLB9665 TPM2 chip. > > drivers/char/tpm/tpm_tis_core.c | 10 ++++------ > 1 file changed, 4 insertions(+), 6 deletions(-) > > diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c > index a2e0395cbe61..6fa150a3b75e 100644 > --- a/drivers/char/tpm/tpm_tis_core.c > +++ b/drivers/char/tpm/tpm_tis_core.c > @@ -709,16 +709,14 @@ static int tpm_tis_gen_interrupt(struct tpm_chip *chip) > cap_t cap; > int ret; > > - /* TPM 2.0 */ > - if (chip->flags & TPM_CHIP_FLAG_TPM2) > - return tpm2_get_tpm_pt(chip, 0x100, &cap2, desc); > - > - /* TPM 1.2 */ > ret = request_locality(chip, 0); > if (ret < 0) > return ret; > > - ret = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, desc, 0); > + if (chip->flags & TPM_CHIP_FLAG_TPM2) > + ret = tpm2_get_tpm_pt(chip, 0x100, &cap2, desc); > + else > + ret = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, desc, 0); > > release_locality(chip, 0); > > This fix works for me. Tested on a SLB9670vq2.0 and the warning message is gone. Tested-by: Lino Sanfilippo <LinoSanfilippo@xxxxxx> Regards, Lino
