linux-kernel - Re: [PATCH 0/1] Summary: hwmon driver for temperature sensors on SATA drives

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Message-ID: <yq1zhfqfgeq.fsf@oracle.com>
Date:   Tue, 17 Dec 2019 22:42:37 -0500
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-hwmon@...r.kernel.org, Jean Delvare <jdelvare@...e.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: [PATCH 0/1] Summary: hwmon driver for temperature sensors on SATA drives


Guenter,

>> Also, there are some devices that will lock up the way you access that
>> VPD page. So a tweak is also required there.
>>
> Do you have details ? Do I need to add a call to scsi_device_supports_vpd(),
> maybe ?

Some devices lock up if you ask for too much data. I actually discovered
a VPD handling regression in 5.5 while working on a series of prep
patches for you today. Working on a fix. I'll try to get a patch series
out for review tomorrow.

-- 
Martin K. Petersen	Oracle Linux Engineering