linux-kernel - Re: small regression: hwmon: (applesmc) Check key count before proceeding

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Message-Id: <E32ACDC7-AF59-4BD0-9CAF-02DF37806B67@colorremedies.com>
Date:	Sun, 24 Nov 2013 10:02:22 -0700
From:	Chris Murphy <bugzilla@...orremedies.com>
To:	Henrik Rydberg <rydberg@...omail.se>
Cc:	Michele Baldessari <michele@...syn.org>, jwboyer@...oraproject.org,
	Guenter Roeck <linux@...ck-us.net>,
	linux-kernel@...r.kernel.org, lm-sensors@...sensors.org,
	Chris Murphy <chris@...rf.com>
Subject: Re: small regression: hwmon: (applesmc) Check key count before proceeding - 5f4513864304672e6ea9eac60583eeac32e679f2


On Nov 24, 2013, at 9:57 AM, Henrik Rydberg <rydberg@...omail.se> wrote:

> Hi Chris,
> 
>> Well, it seems to be a another one off event. It's the same hardware as
> before, and it was booting from a USB stick containing Fedora 20 final test
> candidate 2 which uses kernel 3.11.8. An immediate reboot did not reproduce the
> problem, nor multiple subsequent reboots. I think I previously mentioned a
> preponderance of these events happen when booting from USB sticks.
> 
> Ok, thanks, that makes sense. So at least one problem is still there, but
> possibly very difficult to hit.
> 
>> It would be nice to have an identical model for this testing. I suspect most users wouldn't go to the trouble to report the occasional, seemingly one off,
> events like this. So unfortunately it's  uncertain if the hardware I have has a
> unique problem, or if it's a model specific behavior.
> 
> I will keep this in mind next time I see this particular model. It is also
> possible that the SMC needs to be reset after having testing various more or
> less successful patches. Given the tiny cross-section, it looks like this one
> can rest for now.

This SMC has been reset within that past week, after a rest without its battery or power for about 2 weeks. So unless the SMC is particularly prone to corruption, I think the cause is elsewhere.

OS X always says this battery needs servicing, but doesn't elaborate. The manifestation is merely limited battery life, about 1 hour. All testing is always done with power connected.


Chris Murphy--
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