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To:     Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc:     linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-security-module@vger.kernel.org,
        Peter Huewe <PeterHuewe@gmx.de>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        Stefan Berger <stefanb@linux.vnet.ibm.com>,
        Alexander Steffen <Alexander.Steffen@infineon.com>,
        stable@vger.kernel.org
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 <20190208190057.GA3439@linux.intel.com>
 <20190208191710.GA30645@linux.intel.com>
 <6a86e3e8-e311-7a0f-585d-3f0435b0143a@linux.ibm.com>
 <20190208202353.GB1836@linux.intel.com>
From:   Stefan Berger <stefanb@linux.ibm.com>
Date:   Fri, 8 Feb 2019 15:32:32 -0500
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On 2/8/19 3:23 PM, Jarkko Sakkinen wrote:
> On Fri, Feb 08, 2019 at 02:27:31PM -0500, Stefan Berger wrote:
>> On 2/8/19 2:17 PM, Jarkko Sakkinen wrote:
>>>    */
>>> if (rc > 0) {
>>> 	dev_warn(&chip->dev,
>>> 		 "%s: send(): invalid value %d\n", __func__, rc);
>>> 	rc = 0;
>>> }
>>>
>>> Should be fairly safe play now.
>> Unfortuantely it isn't. You seemed to have lost the
>> EXPORT_SYMBOL_GPL(tpm_chip_start/stop) and the tpm_chip_start/stop around
>> the tpm2_shutdown()...
> OK, now those fixes are back. In tpm_pm_shutdown() case you need also
> take the lock.

tpm_del_char_device also needs the start/stop!


     Stefan


>
> /Jarkko
>