[PATCH V4] tpm: separate cmd_ready/go_idle from runtime_pm

Jarkko Sakkinen jarkko.sakkinen at linux.intel.com
Mon Mar 26 20:09:36 UTC 2018

On Sat, Mar 24, 2018 at 09:39:35PM +0300, Tomas Winkler wrote:
> From: "Winkler, Tomas" <tomas.winkler at intel.com>
> We cannot use go_idle cmd_ready commands via runtime_pm handles
> as with the introduction of localities this is no longer an optional
> feature, while runtime pm can be not enabled.
> Though cmd_ready/go_idle provides power saving feature, it's also part of
> TPM2 protocol and should be called explicitly.
> This patch exposes cmd_read/go_idle via tpm class ops and removes
> runtime pm support as it is not used by any driver.
> tpm_crb no longer needs own power saving functions and can drop using
> tpm_pm_suspend/resume.
> Signed-off-by: Tomas Winkler <tomas.winkler at intel.com>

Still fails on Kabylake exactly the same way. With this I get
RC_UNBALANCED in these four test cases:

test_flush_context (tpm2_smoke.SpaceTest) ... ERROR
test_get_handles (tpm2_smoke.SpaceTest) ... ERROR
test_make_two_spaces (tpm2_smoke.SpaceTest) ... ERROR

Without this patch applied these errors do not occur.

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