diff options
| author | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2019-07-08 17:56:39 +0300 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2019-09-02 17:08:35 +0300 |
| commit | 28eba2fddd5a4292bf9e3dc55193728f3055b782 (patch) | |
| tree | 34b71dab3ca12fd84c2a862284109ddc8eefa473 /drivers/char/tpm | |
| parent | 1ea32c83c699df32689d329b2415796b7bfc2f6e (diff) | |
| download | linux-28eba2fddd5a4292bf9e3dc55193728f3055b782.tar.xz | |
tpm: Remove a deprecated comments about implicit sysfs locking
Remove all comments about implicit locking tpm-sysfs.c as the file was
updated in Linux v5.1 to use explicit locking.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'drivers/char/tpm')
| -rw-r--r-- | drivers/char/tpm/tpm-chip.c | 7 | ||||
| -rw-r--r-- | drivers/char/tpm/tpm-sysfs.c | 7 |
2 files changed, 2 insertions, 12 deletions
diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c index 4838c6a9f0f2..3d6d394a8661 100644 --- a/drivers/char/tpm/tpm-chip.c +++ b/drivers/char/tpm/tpm-chip.c @@ -287,12 +287,9 @@ static void tpm_devs_release(struct device *dev) * @dev: device to which the chip is associated. * * Issues a TPM2_Shutdown command prior to loss of power, as required by the - * TPM 2.0 spec. - * Then, calls bus- and device- specific shutdown code. + * TPM 2.0 spec. Then, calls bus- and device- specific shutdown code. * - * XXX: This codepath relies on the fact that sysfs is not enabled for - * TPM2: sysfs uses an implicit lock on chip->ops, so this could race if TPM2 - * has sysfs support enabled before TPM sysfs's implicit locking is fixed. + * Return: always 0 (i.e. success) */ static int tpm_class_shutdown(struct device *dev) { diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c index d9caedda075b..edfa89160010 100644 --- a/drivers/char/tpm/tpm-sysfs.c +++ b/drivers/char/tpm/tpm-sysfs.c @@ -329,16 +329,9 @@ static const struct attribute_group tpm_dev_group = { void tpm_sysfs_add_device(struct tpm_chip *chip) { - /* XXX: If you wish to remove this restriction, you must first update - * tpm_sysfs to explicitly lock chip->ops. - */ if (chip->flags & TPM_CHIP_FLAG_TPM2) return; - /* The sysfs routines rely on an implicit tpm_try_get_ops, device_del - * is called before ops is null'd and the sysfs core synchronizes this - * removal so that no callbacks are running or can run again - */ WARN_ON(chip->groups_cnt != 0); chip->groups[chip->groups_cnt++] = &tpm_dev_group; } |