lkml.org 
[lkml]   [2016]   [Oct]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH 2/4] tmp/tpm_crb: fix Intel PTT hw bug during idle state
Date

> On Sat, Oct 08, 2016 at 07:00:06PM +0300, Jarkko Sakkinen wrote:
>
> > Rather you it would be better not to use cmdReady/goIdle at all if
> > kernel is not compiled with CONFIG_PM.
>
> It would be best practice to ensure the tpm is powered up no matter how the
> kernel is compiled.. The firmware may have left it in idle or something
>
> FWIW, I broadly agree there is no need to put the device into idle on the error
> paths. It probably wasn't idle when the driver attached to it.

Actually, currently it is more common to have the device in the idle state, so in case a driver is not loaded for any reason by the kernel, the platform won't leak power.
Thanks
Tomas

\
 
 \ /
  Last update: 2016-10-08 18:58    [W:0.055 / U:0.996 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site