tpm: fix suspend/resume paths for TPM 2.0

[firefly-linux-kernel-4.4.55.git] / drivers / char / tpm / tpm-interface.c

diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 20cf94d3138636524196b05c7589255795882029..e85d3416d89918e4050eeec8dd32233f2589dc44 100644 (file)
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -901,6 +901,11 @@ int tpm_pm_suspend(struct device *dev)
        if (chip == NULL)
                return -ENODEV;
 
+       if (chip->flags & TPM_CHIP_FLAG_TPM2) {
+               tpm2_shutdown(chip, TPM2_SU_STATE);
+               return 0;
+       }
+
        /* for buggy tpm, flush pcrs with extend to selected dummy */
        if (tpm_suspend_pcr) {
                cmd.header.in = pcrextend_header;