linux-kernel - Re: [PATCH v1.3 2/4] key: add tpm

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Date:	Fri, 12 Nov 2010 19:24:50 -0200
From:	Rajiv Andrade <srajiv@...ux.vnet.ibm.com>
To:	David Safford <safford@...son.ibm.com>
CC:	David Howells <dhowells@...hat.com>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, keyrings@...ux-nfs.org,
	linux-crypto@...r.kernel.org,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	James Morris <jmorris@...ei.org>
Subject: Re: [PATCH v1.3 2/4] key: add tpm_send command



Hi Dave,

On 11/12/2010 12:48 PM, David Safford wrote:

> On Fri, 2010-11-12 at 14:11 +0000, David Howells wrote:
>> Mimi Zohar<zohar@...ux.vnet.ibm.com>  wrote:
>>
>>>>> +	module_put(chip->dev->driver->owner);
>>>> Where's the corresponding module_get()?  I suspect this should be wrapped to
>>>> match tpm_chip_find_get().
>>>>
>>>> David
>>> The module_get() is in tpm_chip_find_get(), which is just a helper.
>>> (It's used this way throughout tpm.c)
>> I'd make a function tpm_chip_find_put() just to wrap module_put() and then
>> place it with tpm_chip_find_get() in the sources.  That makes it easier to see
>> what's going on.
> Or alternately rename the helper to tpm_chip_find_and_module_get()?
> In either case, this is really up to Rajiv (the maintainer for tpm.c
> who has already acked this patch), as this usage already appears in
> other places in tpm.c. There would have to be a separate patch fixing
> this for all of the instances. Rajiv, your thoughts?
>
> dave
Rename the helper to tpm_chip_find_and_module_get() solves the naming issue in a simpler and better way in my opinion.

Thanks,
Rajiv

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