diff options
| author | Jarkko Sakkinen <jarkko@kernel.org> | 2021-05-10 15:28:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-19 11:08:20 +0300 |
| commit | a0fd39a09e310561cdbd976c1518598b70e3cfa6 (patch) | |
| tree | b0582c4d10f30b9deec2fcf7bd4bef75f0278301 /drivers/char | |
| parent | 0a60d4be38f0229225dfd448a0fd06ef0a917fd1 (diff) | |
| download | linux-a0fd39a09e310561cdbd976c1518598b70e3cfa6.tar.xz | |
tpm, tpm_tis: Extend locality handling to TPM2 in tpm_tis_gen_interrupt()
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@redhat.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/linux-integrity/20210220125534.20707-1-jarkko@kernel.org/
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>
Tested-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/tpm/tpm_tis_core.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index 7da35867b6ad..2794f6acf4cc 100644 --- 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 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); |