diff options
| author | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2018-11-04 21:01:42 +0300 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2019-02-13 10:48:28 +0300 |
| commit | 2f257402ee981720d65080b1e3ce19f693f5c9c3 (patch) | |
| tree | b4617b3fdc6682ba129f4f46bc8c21308d912030 /drivers/char/tpm/tpm-chip.c | |
| parent | 2677ca98ae377517930c183248221f69f771c921 (diff) | |
| download | linux-2f257402ee981720d65080b1e3ce19f693f5c9c3.tar.xz | |
tpm: remove TPM_TRANSMIT_UNLOCKED flag
Added locking as part of tpm_try_get_ops() and tpm_put_ops() as they are
anyway used in most of the call sites except in tpmrm_release() where we
take the locks manually.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Tested-by: Alexander Steffen <Alexander.Steffen@infineon.com>
Diffstat (limited to 'drivers/char/tpm/tpm-chip.c')
| -rw-r--r-- | drivers/char/tpm/tpm-chip.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c index 32db84683c40..157505b0f755 100644 --- a/drivers/char/tpm/tpm-chip.c +++ b/drivers/char/tpm/tpm-chip.c @@ -58,6 +58,7 @@ int tpm_try_get_ops(struct tpm_chip *chip) if (!chip->ops) goto out_lock; + mutex_lock(&chip->tpm_mutex); return 0; out_lock: up_read(&chip->ops_sem); @@ -75,6 +76,7 @@ EXPORT_SYMBOL_GPL(tpm_try_get_ops); */ void tpm_put_ops(struct tpm_chip *chip) { + mutex_unlock(&chip->tpm_mutex); up_read(&chip->ops_sem); put_device(&chip->dev); } |