Commit e630af7d authored by Jarkko Sakkinen's avatar Jarkko Sakkinen

tpm, tpm_tis: Extend locality handling to TPM2 in tpm_tis_gen_interrupt()

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.org/
Fixes: a3fbfae8 ("tpm: take TPM chip power gating out of tpm_transmit()")
Reported-by: default avatarLino Sanfilippo <LinoSanfilippo@gmx.de>
Signed-off-by: default avatarJarkko Sakkinen <jarkko@kernel.org>
Tested-by: default avatarLino Sanfilippo <LinoSanfilippo@gmx.de>
parent b3ad7855
......@@ -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);
......
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