linux-kernel - Re: [PATCH] dell-smm-hwmon: Cache fan_type() calls and use fan

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Message-ID: <2fc3a0a0-950d-845c-200d-7a89b57270f6@leemhuis.info>
Date:	Thu, 26 May 2016 17:39:57 +0200
From:	Thorsten Leemhuis <fedora@...mhuis.info>
To:	Pali Rohár <pali.rohar@...il.com>,
	Jan C Peters <jcpeters89@...il.com>,
	David Santamaría Rogado <howl.nsp@...il.com>,
	Peter Saunderson <peteasa@...il.com>,
	Jean Delvare <jdelvare@...e.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Tolga Cakir <cevelnet@...il.com>
Cc:	linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dell-smm-hwmon: Cache fan_type() calls and use
 fan_status() for fan detection

Lo!

Pali Rohár wrote on 21.05.2016 16:46:
> […] Thorsten […] can you test this patch if it fixes your freeze problem at
> boottime and when using "sensors" program?

FWIW, I never saw either of those problems. I only saw the third issue
that was mentioned: the CPU fan speed is going up and down as described
in https://bugzilla.kernel.org/show_bug.cgi?id=100121

> I need to know if this patch fixes problem on Dell Studio XPS 8000 and
> Dell Studio XPS 8100 machines, so we can revert git commits:
> 6220f4ebd7b4 ("hwmon: (dell-smm) Blacklist Dell Studio XPS 8000")
> a4b45b25f18d ("hwmon: (dell-smm) Blacklist Dell Studio XPS 8100")

Just checked: Sorry, that patch did not fix the CPU fan speed issue on
my XPS 8000, so there is afaics no reason to revert 6220f4ebd7b4 :-/

HTH, CU, knurd