xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tpm: drop tpm1_chip_register(/unregister)

Browse Source 
Check for TPM2 chip in tpm_sysfs_add_device, tpm_bios_log_setup and
tpm_bios_log_teardown in order to make code flow cleaner and to enable
to implement TPM 2.0 support later on. This is partially derived from
the commit by Nayna Jain with the extension that also tpm1_chip_register
is dropped.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Tested-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tested-by: Nayna Jain <nayna@linux.vnet.ibm.com>
This commit is contained in:
Jarkko Sakkinen
2016-11-14 05:00:51 -05:00
parent cd9b7631a8
commit 7518a21a9d
3 changed files with 11 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/char/tpm/tpm-sysfs.c
View File

@@ -284,6 +284,9 @@ static const struct attribute_group tpm_dev_group = {
void tpm_sysfs_add_device(struct tpm_chip *chip)
{
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