Messages in this thread | | | Date | Mon, 11 Jan 2010 13:19:48 +0100 | From | Marcel Selhorst <> | Subject | Re: [PATCH] tpm_infineon: Fix suspend/resume handler for pnp_driver |
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Hi,
> I guess it might be tpm_infineon can't suspend/resume properly. However, > with it, I don't know what happen actually. (it might be, tpm can't > verify the security issue on suspend/resume process? or can't wakeup > from tpm? or spend power? or other?)
On suspend, the TPM framework sends a command "TPM_SaveState" to the chip to inform it about the upcoming suspend. Therefore it is necessary to have the function tpm_pm_suspend called (either directly or via pnp). On resume, the state will automatically be restored by the TPM.
The patch looks good to me, but I haven't had a chance to test it, yet. As soon as I did, I'll get back to you.
Thanks, Marcel Selhorst -- Sirrix AG security technologies -- http://www.sirrix.com Dipl.-Ing. Marcel Selhorst eMail: m.selhorst@sirrix.com Tel: +49 (234) 610071-126 Fax: +49 (234) 610071-526 Tel: +49 (681) 95986-126 Fax: +49 (681) 95986-526 Get my public key from keyserver, KeyId: 0x7C9821CC Fingerprint 4138 E617 E62E 79D3 E663 BE5A 14E7 1CD8 7C98 21CC
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