linux-kernel - Re: [PATCH v2] tpm: enable PPI for TPM 2.0

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Message-ID: <20150422054422.GB6764@intel.com>
Date:	Wed, 22 Apr 2015 08:44:22 +0300
From:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	peterhuewe@....de, tpmdd-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, Marcel Selhorst <tpmdd@...horst.net>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Tejun Heo <tj@...nel.org>, Al Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jianyu Zhan <nasa4836@...il.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Andrzej Hajda <a.hajda@...sung.com>, NeilBrown <neilb@...e.de>,
	Simon Wunderlich <sw@...onwunderlich.de>
Subject: Re: [PATCH v2] tpm: enable PPI for TPM 2.0

On Tue, Apr 21, 2015 at 11:58:33AM -0700, Guenter Roeck wrote:
> On Tue, Apr 21, 2015 at 09:30:55PM +0300, Jarkko Sakkinen wrote:
> > Enabled PPI interface to the character device sysfs directory accessible
> > both for 1.x and 2.0 devices.
> > 
> > The ppi group is moved from the platform device directory to the
> > character device directory. In order to retain backwards compatibility
> > with the 1.x devices, a symlink is created to the platform device
> > directory.
> > 
> > Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
> > Reviewed-by: Jason Gunthorpe <jason.gunthorpe@...idianresearch.com>
> > ---
> >  drivers/char/tpm/tpm-chip.c | 21 +++++++++++++--------
> >  drivers/char/tpm/tpm.h      | 17 ++++++-----------
> >  drivers/char/tpm/tpm_ppi.c  | 34 +++++++++++-----------------------
> >  fs/kernfs/dir.c             |  1 +
> >  fs/sysfs/group.c            | 42 ++++++++++++++++++++++++++++++++++++++++++
> >  include/linux/sysfs.h       |  8 ++++++++
> 
> Shouldn't the sysfs changes be a separate patch ?

Yes, I think it would make sense. I'll refine this as a patch set.
Thanks.

> Guenter

/Jarkko
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