Re: [PATCH v5 1/1] tpm: add sysfs exports for all banks of PCR registers

On Tue, Jan 12, 2021 at 05:59:58PM -0800, James Bottomley wrote:

Create sysfs per hash groups with 24 PCR files in them one group,
named pcr-<hash>, for each agile hash of the TPM.  The files are
plugged in to a PCR read function which is TPM version agnostic, so
this works also for TPM 1.2 but the hash is only sha1 in that case.

Note: the macros used to create the hashes emit spurious checkpatch
warnings.  Do not try to "fix" them as checkpatch recommends, otherwise
they'll break.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Jerry Snitselaar <redacted>
Tested-by: Thiago Jung Bauermann <redacted>

---

v2: fix TPM 1.2 legacy links failure
v3: fix warn on and add note to tpm_algorithms
v4: reword commit and add tested-by
v5: algorithm spelling fix WARN->dev_err
---
 drivers/char/tpm/tpm-sysfs.c | 179 +++++++++++++++++++++++++++++++++++
 include/linux/tpm.h          |   9 +-
 2 files changed, 187 insertions(+), 1 deletion(-)

You add new sysfs files, but do not add Documentation/ABI/ entries
showing how they are used and what they contain :(

Please do that for the next version of this patch.

thanks,

greg k-h