diff options
| author |   Xiaoyan Zhang <xiaoyan.zhang@intel.com> | 2012-08-22 18:47:22 +0800 |
|---|---|---|
| committer |   Kent Yoder <key@linux.vnet.ibm.com> | 2012-08-22 16:23:42 -0500 |
| commit | f84fdff0fdcda7e509ce530e0ee612233a2104fb (patch) | |
| tree | 6af900776de08b9610f383eb741681366e800e9a /drivers/char/tpm/tpm.c | |
| parent | Documentation: sysfs for Physical Presence Interface (diff) | |
| download | linux-dev-f84fdff0fdcda7e509ce530e0ee612233a2104fb.tar.xz linux-dev-f84fdff0fdcda7e509ce530e0ee612233a2104fb.zip | |
driver: add PPI support in tpm driver
The Physical Presence Interface enables the OS and the BIOS to cooperate and
provides a simple and straightforward platform user experience for
administering the TPM without sacrificing security.
V2: separate the patch out in a separate source file,
add #ifdef CONFIG_ACPI so it compiles out on ppc,
use standard error instead of ACPI error as return code of show/store fns.
V3: move #ifdef CONFIG_ACPI from .c file to .h file.
V4: move tpm_ppi code from tpm module to tpm_bios module.
V5: modify sys_add_ppi() so that ppi_attr_grp doesn't need to be exported
Signed-off-by: Xiaoyan Zhang <xiaoyan.zhang@intel.com>
Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
Diffstat (limited to 'drivers/char/tpm/tpm.c')
| -rw-r--r-- | drivers/char/tpm/tpm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 0a75638e3e56..39526c053158 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -1476,6 +1476,11 @@ struct tpm_chip *tpm_register_hardware(struct device *dev, goto put_device; } + if (sys_add_ppi(&dev->kobj)) { + misc_deregister(&chip->vendor.miscdev); + goto put_device; + } + chip->bios_dir = tpm_bios_log_setup(devname); /* Make chip available */ |