From: Jarkko Sakkinen <jarkko@xxxxxxxxxx> commit e630af7dfb450d1c00c30077314acf33032ff9e4 upstream. 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> Tested-by: Lino Sanfilippo <LinoSanfilippo@xxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/char/tpm/tpm_tis_core.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -620,16 +620,14 @@ static int tpm_tis_gen_interrupt(struct 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);
