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@redhat.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/linux-integrity/20210220125534.20707-1-jarkko@kernel... Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Reported-by: Lino Sanfilippo LinoSanfilippo@gmx.de Signed-off-by: Jarkko Sakkinen jarkko@kernel.org
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@gmx.de
Regards, Lino