diff options
| author | Jarkko Sakkinen <jarkko@kernel.org> | 2021-05-10 15:28:31 +0300 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko@kernel.org> | 2021-05-12 22:36:42 +0300 |
| commit | 8a2d296aaebadd68d9c1f6908667df1d1c84c051 (patch) | |
| tree | 803861da96938d1396dceb45d1583b742843f4ce /drivers/char | |
| parent | e630af7dfb450d1c00c30077314acf33032ff9e4 (diff) | |
| download | linux-8a2d296aaebadd68d9c1f6908667df1d1c84c051.tar.xz | |
tpm, tpm_tis: Reserve locality in tpm_tis_resume()
Reserve locality in tpm_tis_resume(), as it could be unsert after waking
up from a sleep state.
Cc: stable@vger.kernel.org
Cc: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Reported-by: Hans de Goede <hdegoede@redhat.com>
Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()")
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/tpm/tpm_tis_core.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index 6fa150a3b75e..55b9d3965ae1 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -1125,12 +1125,20 @@ int tpm_tis_resume(struct device *dev) if (ret) return ret; - /* TPM 1.2 requires self-test on resume. This function actually returns + /* + * TPM 1.2 requires self-test on resume. This function actually returns * an error code but for unknown reason it isn't handled. */ - if (!(chip->flags & TPM_CHIP_FLAG_TPM2)) + if (!(chip->flags & TPM_CHIP_FLAG_TPM2)) { + ret = request_locality(chip, 0); + if (ret < 0) + return ret; + tpm1_do_selftest(chip); + release_locality(chip, 0); + } + return 0; } EXPORT_SYMBOL_GPL(tpm_tis_resume); |