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Date:   Thu, 21 Dec 2017 16:04:56 +0800
From:   Chris Chiu <chiu@...lessm.com>
To:     peterhuewe@....de, jarkko.sakkinen@...ux.intel.com, jgg@...pe.ca,
        linux-integrity@...r.kernel.org,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        Linux Upstreaming Team <linux@...lessm.com>
Subject: TPM driver breaks S3 suspend

Hi,
    We have a desktop which has S3 suspend (to RAM) problem due to
error messages as follows.
[  198.908282] tpm tpm0: Error (38) sending savestate before suspend
[  198.908289] __pnp_bus_suspend(): tpm_pm_suspend+0x0/0x160 returns 38
[  198.908293] dpm_run_callback(): pnp_bus_suspend+0x0/0x20 returns 38
[  198.908298] PM: Device 00:0b failed to suspend: error 38

    However, the first suspend after boot is working although it still
shows an interesting message during resume.
[  155.789945] tpm tpm0: A TPM error (38) occurred continue selftest

    The error code 38 in definition is TPM_ERR_INVALID_POSTINIT. I
found some explanations which said this error code means that this
command was received in the wrong sequence relative to a TPM_Startup
command. Don't really know what happens here and how should I deal
with this? Any suggestions? Please let me know what else information
should I provide. Thanks

Chris

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