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Date:   Mon, 7 Dec 2020 12:42:53 +0800
From:   Kai-Heng Feng <>
To:     Jarkko Sakkinen <>
        open list <>
Subject: [Regression] Can only do S3 once after "tpm: take TPM chip power
 gating out of tpm_transmit()"

Hi Jarkko,

A user report that the system can only do S3 once. Subsequent S3 fails after commit a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()").

Dmesg with the issue, collected under 5.10-rc2:

Dmesg without the issue, collected under 5.0.0-rc8:

Full bug report here:


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