From: "Pali Rohár" <pali.rohar@gmail.com>
To: Thorsten Leemhuis <fedora@leemhuis.info>
Cc: "Jan C Peters" <jcpeters89@gmail.com>,
"David Santamaría Rogado" <howl.nsp@gmail.com>,
"Peter Saunderson" <peteasa@gmail.com>,
"Jean Delvare" <jdelvare@suse.com>,
"Guenter Roeck" <linux@roeck-us.net>,
"Tolga Cakir" <cevelnet@gmail.com>,
linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dell-smm-hwmon: Cache fan_type() calls and use fan_status() for fan detection
Date: Fri, 27 May 2016 12:45:47 +0200 [thread overview]
Message-ID: <201605271245.47383@pali> (raw)
In-Reply-To: <10b66444-9405-9d4c-b1ec-ce57f7e8420f@leemhuis.info>
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On Friday 27 May 2016 12:01:21 Thorsten Leemhuis wrote:
> Pali Rohár wrote on 27.05.2016 11:47:
> > […]
> > I do not see any long taking SMM call here. Are you really sure
> > that your machine freeze when loading or using dell-smm-hwmon?
>
> Uhh, sorry, it seems something got mixed up somewhere. As mentioned
> earlier in this thread already: The Studio XPS 8000 I have here never
> froze when loading or using dell-smm-hwmon. I only saw its CPU fan
> speed going up and down as described in
> https://bugzilla.kernel.org/show_bug.cgi?id=100121 From the mail that
> started this thread I got the impression that all those problems are
> all related somehow, so I went testing the patch as asked.
Looks like there are two different problems with dell-smm-hwmon driver:
1) Fan speed going randomly up and down without system freeze
2) System freeze at boot time and at that time fan speed goes up
I though that problem with fan speed is SMM freeze, but from your log I
see that it is not truth. And my patch seems to fix problem 2).
So for problem 1) I need to know:
* Is it regression? I.e. is there kernel version under which i8k (or
dell-smm-hwmon) is working?
* If it is regression, then I need somebody to fully fully bisect
problematic commit. And then starts reverting it on top of new kernel
versions (to check that only that commit cause problem 1)).
--
Pali Rohár
pali.rohar@gmail.com
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next prev parent reply other threads:[~2016-05-27 10:45 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-21 14:46 [PATCH] dell-smm-hwmon: Cache fan_type() calls and use fan_status() for fan detection Pali Rohár
2016-05-22 0:19 ` Guenter Roeck
2016-05-22 0:28 ` Pali Rohár
2016-06-13 18:52 ` Pali Rohár
2016-06-14 2:02 ` Guenter Roeck
2016-06-15 8:03 ` Pali Rohár
2016-05-26 15:39 ` Thorsten Leemhuis
2016-05-26 15:51 ` Pali Rohár
2016-05-27 8:00 ` Thorsten Leemhuis
2016-05-27 9:47 ` Pali Rohár
2016-05-27 10:01 ` Thorsten Leemhuis
2016-05-27 10:45 ` Pali Rohár [this message]
2016-05-27 13:05 ` Thorsten Leemhuis
2016-05-27 13:21 ` Pali Rohár
2016-05-29 19:27 ` Peter Saunderson
2016-05-30 9:36 ` Pali Rohár
2016-05-30 16:25 ` Peter Saunderson
2016-06-02 13:06 ` Pali Rohár
2016-05-30 11:45 ` Thorsten Leemhuis
2016-06-13 18:30 ` Pali Rohár
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