linux-kernel - Re: [PATCH v2 0/3] tpm_tis: Clean up force module parameter

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Message-ID: <20151201211449.GB5071@intel.com>
Date:	Tue, 1 Dec 2015 23:14:49 +0200
From:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Cc:	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	Martin Wilck <Martin.Wilck@...fujitsu.com>,
	Peter Huewe <peterhuewe@....de>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Subject: Re: [PATCH v2 0/3] tpm_tis: Clean up force module parameter

On Tue, Dec 01, 2015 at 11:58:26AM -0700, Jason Gunthorpe wrote:
> Drive the force=1 flow through the driver core. There are two main reasons to do this:
>  1) To enable tpm_tis for OF environments requires a platform_device anyhow, so
>     the probe/release code needs to be re-used for that.
>  2) Recent changes in the core code break the assumption that a driver will be
>     'attached' to things created through platform_device_register_simple,
>     which causes the tpm core to blow up.
> 
> v2:
>  - Make sure we request the mem resource in tpm_tis to avoid double-loading
>    the driver
>  - Re-order the init sequence so that a forced platform device gets first crack at
>    loading, and excludes the other mechanisms via the above
>  - Checkpatch clean
>  - Gotos renamed
> 
> Martin, this should fix the double loading you noticed, please confirm.  There
> is a possibility the force path needs a bit more code to be compatible with
> devm_ioremap_resource, I'm not sure, hoping not.

Just wanted to quickly say that I'm good with your interrupt rework
patches. I did only one squash as you can see:

https://github.com/jsakkine/linux-tpmdd/commits/master

For the other changes your arguments how patches should be separated in
this rework made perfect sense after a few re-reads.

I can accept them once I've tested them but in order to test them we
have to get these patches reviewed first as soon as possible.

/Jarkko

> Jason Gunthorpe (3):
>   tpm_tis: Disable interrupt auto probing on a per-device basis
>   tpm_tis: Use devm_ioremap_resource
>   tpm_tis: Clean up the force=1 module parameter
> 
>  drivers/char/tpm/tpm_tis.c | 203 +++++++++++++++++++++++++++------------------
>  1 file changed, 122 insertions(+), 81 deletions(-)
> 
> -- 
> 2.1.4
> 
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