diff options
Diffstat (limited to 'drivers/char/tpm/tpm-sysfs.c')
| -rw-r--r-- | drivers/char/tpm/tpm-sysfs.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c index d93736aa2703..34e7fc7e590c 100644 --- a/drivers/char/tpm/tpm-sysfs.c +++ b/drivers/char/tpm/tpm-sysfs.c @@ -295,5 +295,10 @@ int tpm_sysfs_add_device(struct tpm_chip *chip) void tpm_sysfs_del_device(struct tpm_chip *chip) { + /* The sysfs routines rely on an implicit tpm_try_get_ops, this + * function is called before ops is null'd and the sysfs core + * synchronizes this removal so that no callbacks are running or can + * run again + */ sysfs_remove_group(&chip->dev.parent->kobj, &tpm_dev_group); } |