From: Guenter Roeck <linux@roeck-us.net>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-hwmon@vger.kernel.org, Jean Delvare <jdelvare@suse.com>,
Linus Walleij <linus.walleij@linaro.org>,
Bart Van Assche <bvanassche@acm.org>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org,
Chris Healy <cphealy@gmail.com>
Subject: Re: [PATCH v2] hwmon: Driver for temperature sensors on SATA drives
Date: Wed, 18 Dec 2019 23:37:47 -0800 [thread overview]
Message-ID: <f2b90347-66db-16f9-44b1-b6c7df319331@roeck-us.net> (raw)
In-Reply-To: <yq1r211dvck.fsf@oracle.com>
Hi Martin,
On 12/18/19 4:15 PM, Martin K. Petersen wrote:
>
> Guenter,
>
>> This driver solves this problem by adding support for reading the
>> temperature of SATA drives from the kernel using the hwmon API and
>> by adding a temperature zone for each drive.
>
> My working tree is available here:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/mkp/linux.git/log/?h=5.6/drivetemp
>
I had a quick look at the patch. Looks good overall. I think you should be able
to use the buffer allocated in struct drivetemp_data (named smartdata). Maybe
rename it to something more generic. If it needs to be dma-aligned, maybe we
can use kzalloc() to allocate it. Only reason I didn't use it for vpd was because
that needed 1024 bytes.
> A few notes:
>
> - Before applying your patch I did s/satatemp/drivetemp/
>
> - I get a crash in the driver core during probe if the drivetemp module
> is loaded prior to loading ahci or a SCSI HBA driver. This crash is
> unrelated to my changes. Haven't had time to debug.
>
Definitely something we'll need to look into. Do you have a traceback ?
Thanks,
Guenter
> - I tweaked your ATA detection heuristics and now use the cached VPD
> page 0x89 instead of fetching one from the device.
>
> - I also added support for reading the temperature log page on SCSI
> drives.
>
> - Tested with a mixed bag of about 40 SCSI and SATA drives attached.
>
> - I still think sensor naming needs work. How and where are the
> "drivetemp-scsi-8-140" names generated?
>
> I'll tinker some more but thought I'd share what I have for now.
>
next prev parent reply other threads:[~2019-12-19 7:37 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-15 17:45 [PATCH v2 0/1] Summary: hwmon driver for temperature sensors on SATA drives Guenter Roeck
2019-12-15 17:45 ` [PATCH v2] hwmon: Driver " Guenter Roeck
2019-12-19 0:15 ` Martin K. Petersen
2019-12-19 0:32 ` Guenter Roeck
2020-01-07 4:10 ` Martin K. Petersen
2020-01-07 13:00 ` Guenter Roeck
2020-01-08 1:29 ` Martin K. Petersen
2020-01-08 15:32 ` Guenter Roeck
2019-12-19 7:37 ` Guenter Roeck [this message]
2020-01-01 17:46 ` Guenter Roeck
2020-01-03 3:06 ` Martin K. Petersen
2020-01-08 1:12 ` Martin K. Petersen
2020-01-08 15:33 ` Guenter Roeck
2020-01-11 20:22 ` Guenter Roeck
2020-01-12 11:17 ` Gabriel C
2020-01-12 11:21 ` Linus Walleij
2020-01-12 12:02 ` Gabriel C
2020-01-12 12:07 ` Linus Walleij
2020-01-12 13:07 ` Guenter Roeck
2020-01-12 13:45 ` Gabriel C
2020-01-12 15:26 ` Guenter Roeck
2020-01-12 18:37 ` Gabriel C
2020-01-12 20:08 ` Guenter Roeck
2020-01-12 22:26 ` Gabriel C
2020-01-14 3:03 ` Martin K. Petersen
2020-01-14 5:20 ` Guenter Roeck
2020-01-16 4:12 ` Martin K. Petersen
2020-01-16 5:09 ` Guenter Roeck
2020-01-16 17:47 ` Guenter Roeck
2020-01-17 1:43 ` Martin K. Petersen
2020-01-17 3:53 ` Guenter Roeck
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