Messages in this thread | | | Date | Mon, 2 Feb 2015 21:20:03 +0200 | From | Jarkko Sakkinen <> | Subject | Re: [PATCH v2] tpm: fix suspend/resume paths for TPM 2.0 |
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Are we good with this?
/Jarkko
On Thu, Jan 29, 2015 at 06:43:12PM +0000, Scot Doyle wrote: > On Thu, 29 Jan 2015, Jarkko Sakkinen wrote: > > Fixed suspend/resume paths for TPM 2.0 and consolidated all the > > associated code to the tpm_pm_suspend() and tpm_pm_resume() > > functions. Resume path should be handled by the firmware, i.e. > > Startup(CLEAR) for hibernate and Startup(STATE) for suspend. > > > > There might be some non-PC embedded devices in the future where > > Startup() is not the handled by the FW but fixing the code for > > those IMHO should be postponed until there is hardware available > > to test the fixes although extra Startup in the driver code is > > essentially a NOP. > > > > Added Shutdown(CLEAR) to the remove paths of TIS and CRB drivers. > > Changed tpm2_shutdown() to a void function because there isn't > > much you can do except print an error message if this fails with > > a system error. > > > > Reported-by: Peter Hüwe <PeterHuewe@gmx.de> > > Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > > --- > > drivers/char/tpm/tpm-interface.c | 6 ++++-- > > drivers/char/tpm/tpm.h | 2 +- > > drivers/char/tpm/tpm2-cmd.c | 19 +++++++++++-------- > > drivers/char/tpm/tpm_crb.c | 20 +++++--------------- > > drivers/char/tpm/tpm_tis.c | 26 +++++++++++++------------- > > 5 files changed, 34 insertions(+), 39 deletions(-) > > Resume still functions on TPM 1.2 chip, with and without CONFIG_TCG_CRB. > > Tested-by: Scot Doyle <lkml14@scotdoyle.com>
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