linux-kernel - Re: [PATCH v11 00/16] Remove nested TPM operations

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Date:   Fri, 8 Feb 2019 07:05:26 -0500
From:   Stefan Berger <stefanb@...ux.ibm.com>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:     Alexander Steffen <Alexander.Steffen@...ineon.com>,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        Peter Huewe <PeterHuewe@....de>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Tomas Winkler <tomas.winkler@...el.com>,
        Tadeusz Struk <tadeusz.struk@...el.com>,
        Stefan Berger <stefanb@...ux.vnet.ibm.com>,
        Nayna Jain <nayna@...ux.ibm.com>
Subject: Re: [PATCH v11 00/16] Remove nested TPM operations

On 2/8/19 6:14 AM, Jarkko Sakkinen wrote:
> On Thu, Feb 07, 2019 at 08:51:15PM -0500, Stefan Berger wrote:
>>>> +    rc = 0;
>>>>        if (chip->flags & TPM_CHIP_FLAG_IRQ)
>>>>            goto out_recv;
>>> What why?
>>
>> This fix seems to only be necessary when bisecting. You may want to apply
>> it!
> I don't want to apply it because I don't understand why it would
> be needed. Can you give a short explanation?


See my comment on [PATCH v11 08/16]. It needs to be added in that patch 
since otherwise rc holds a non-zero value on function exit, which is 
wrong at that point.


>
> /Jarkko
>